Star White YOUR PHONE FACE-OFF
Real specs. Clear sources.Exact variants · Checked 28 Sept 2026Apple iPhone Duo vs Samsung Galaxy S25 Ultra
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DIFFERENCES AT A GLANCE
- Manufacturer physical format
- iPhone Duo: foldable vs Galaxy S25 Ultra: slab
- Manufacturer device mass
- iPhone Duo: 254 g vs Galaxy S25 Ultra: 218 g
Samsung
Galaxy S25 Ultra
6.9″ · Dynamic AMOLED 2X · 120 Hz · Snapdragon 8 Elite for Galaxy
512 GB · Titanium Silverblue · UK SM-S938BZBGEUBFull product profile
Titanium SilverblueListed configurations: iPhone Duo 2000 GB, Galaxy S25 Ultra 512 GB. Storage is a tier you choose, not a difference between the models. Compare both at 256 GB.
As an Amazon Associate I earn from qualifying purchases.
THE DIFFERENCES, MADE VISIBLE
Visual facts
Differences first. Select a topic for its graphic, sources and conditions.
How to read this comparison
How to read this comparison
- Manufacturer facts for the exact models shown. Not a quality rating or a test result.
- “Different” means the known values differ, not that one is better.
- Missing or conflicting evidence is marked and never counts as a difference. Source chips hold each fact’s sources and conditions.
Not verified for either phone, so not charted: Pixel density. Missing evidence is not a difference.
SPECIFICATIONS SIDE BY SIDE6 topics
SELECTED TOPIC
01 / 06
Chip and core configuration
A different chip or core configuration is a hardware change, not a measured performance uplift.
Octa-core; CPU clock groups: 4.47 / 3.5 GHz. Named on Samsung's UK Galaxy S25 Ultra page. Manufacturer specification, not a performance benchmark.
DATA INCOMPLETE
Find your screen size.
Bigger is a preference, not a quality score.
- iPhone Duo
- Not verified
- Galaxy S25 Ultra
- 6.9″
Relative diagonals · illustrative shape, not actual size
DATA INCOMPLETE
Camera details matter.
Dedicated telephoto reach. No digital or crop zoom.
- iPhone Duo
- Not verified
- Galaxy S25 Ultra
- 5×From the published optical-zoom listing
Lens illustration · not an image-quality test
DATA INCOMPLETE
Playback on paper.
Up-to claims. Different test methods; no endurance winner.
- iPhone Duo
- Not verified
- Galaxy S25 Ultra
- Up to 31h
Arcs on a shared 0–40 h scale · not mixed-use battery life
WHAT CHANGES BETWEEN THEM?
Full specifications ↓Key differences
10 verified differences, most decision-relevant first. 2 are also drawn in Visual facts above. Missing information stays separate.
Chip and core configuration
In Visual factsiPhone DuoA20 Pro chip 6-core CPU with 2 super cores and 4 efficiency cores 7-core GPU with Neural Accelerators Dual 16-core Neural Engine Hardware-accelerated ray tracing
Galaxy S25 UltraSnapdragon 8 Elite for Galaxy
Sources
Galaxy S25 Ultra
Octa-core; CPU clock groups: 4.47 / 3.5 GHz. Named on Samsung's UK Galaxy S25 Ultra page. Manufacturer specification, not a performance benchmark.
Samsung UK Galaxy S25 Ultra technical specifications — SM-S938BZBGEUBSamsung UK Galaxy S25 Ultra product pageDifferent hardware. A chip name or generation does not quantify real-world performance.
Manufacturer update-policy information
iPhone DuoNo fixed update duration is listed in this manufacturer technical source.
Galaxy S25 UltraSecurity updates until 31 January 2032
Sources
iPhone Duo
No support years or promised major-version count are inferred. The installed operating system is listed separately.
Apple UK — iPhone Duo technical specificationsGalaxy S25 Ultra
This is an end date for security updates, not a number of years remaining from purchase.
Samsung UK Galaxy S25 Ultra technical specifications — SM-S938BZBGEUBDistinguish Android upgrades from security coverage. A total term from launch is not the support remaining from today or from purchase.
Connector capabilities
iPhone DuoUSB-C connector with support for: Charging DisplayPort USB 3 (up to 10Gb/s)
Galaxy S25 UltraUSB Type-C; USB 3.2 Gen 1
Sources
Check the exact configuration and source conditions for your use.
Manufacturer physical format
iPhone Duofoldable
Galaxy S25 Ultraslab
Sources
Check the exact configuration and source conditions for your use.
Manufacturer dimensions by physical state
iPhone DuoOpen: Width: 164.6 mm; Height: 117.8 mm; Depth: 5.2 mm | Closed: Width: 84.1 mm; Height: 117.8 mm; Depth: 11.3 mm
Galaxy S25 Ultra162.8 x 77.6 x 8.2 mm (height × width × depth)
Sources
iPhone Duo
Open and closed dimensions are separate source states.
Apple UK — iPhone Duo technical specificationsA size or weight trade-off; it does not establish the better product.
Manufacturer device mass
In Visual factsiPhone Duo254 g
Galaxy S25 Ultra218 g
Sources
A size or weight trade-off; it does not establish the better product.
Show 4 more verified differences
Rear camera system
iPhone Duo48MP Dual Fusion camera system 48MP Fusion Main: 26mm, ƒ/1.6 aperture, sensor-shift optical image stabilisation, Hybrid Focus Pixels, super-high-resolution photos (24MP and 48MP) Also enables 12MP optical-quality 2x Telephoto: 52mm, ƒ/1.6 aperture, sensor-shift optical image stabilisation, Hybrid Focus Pixels 48MP Fusion Ultra Wide: 13mm, ƒ/2.2 aperture and 120° field of view, Hybrid Focus Pixels, super-high-resolution photos (24MP and 48MP) 2x optical-quality zoom in, 2x optical zoom out; 4x optical-quality zoom range Digital zoom up to 10x Smart Take Duo Preview Photographic Styles 3 Smart focus tracking Customisable default lens (Fusion Main) Sapphire crystal lens cover True Tone flash Photonic Engine Deep Fusion Smart HDR 5 Next-generation portraits with Focus and Depth Control Portrait Lighting with six effects Night mode Panorama (up to 63MP) 48MP macro photography Wide colour capture for photos and Live Photos Lens correction (Fusion Ultra Wide) Advanced red-eye correction Auto image stabilisation Burst mode Photo geotagging Image formats captured: HEIF and JPEG
Galaxy S25 UltraRear: 200 MP + 50 MP + 50 MP + 10 MP; Front: 12 MP; Video: up to 8K 30 fps
Sources
Galaxy S25 Ultra
Video recording resolution: UHD 8K (7680 x 4320) at 30 fps.
Samsung UK Galaxy S25 Ultra technical specifications — SM-S938BZBGEUBCompare the camera hardware and recording modes. Matching megapixels or zoom do not mean identical cameras.
Manufacturer display specification
iPhone DuoInner display Super Retina XDR display 7.6-inch (diagonal) all-screen OLED folding display 1878x2670-pixel resolution at 430 ppi Nano-texture finish Wide-angle OLEDs; Outer display Super Retina XDR display 5.4-inch (diagonal) all-screen OLED display 1398x2034-pixel resolution at 460 ppi; Both displays Dynamic Island Always-On display ProMotion technology with adaptive refresh rates up to 120Hz HDR display True Tone Wide colour (P3) Haptic Touch 2,000,000:1 contrast ratio (typical) 1,000 nits max brightness (typical); 1,600 nits peak brightness (HDR); 3,000 nits peak brightness (outdoor); 1 nit minimum brightness Fingerprint-resistant oleophobic coating Anti-reflective coating Support for display of multiple languages and characters simultaneously Supports Apple Pencil (USB-C) The iPhone Duo displays have rounded corners that follow a beautiful curved design, and these corners are within a standard rectangle. When measured as a standard rectangular shape, the screens are 7.58 and 5.36 inches diagonally (actual viewable area is less).
Galaxy S25 Ultra6.9-inch Dynamic AMOLED 2X; 3120 × 1440; up to 120 Hz
Sources
Galaxy S25 Ultra
Measured as a full rectangle: 174.2 mm (6.9-inch); 172.2 mm (6.8-inch) with rounded corners. Resolution class: Quad HD+.
Samsung UK Galaxy S25 Ultra technical specifications — SM-S938BZBGEUBCheck the exact configuration and source conditions for your use.
Manufacturer battery and charging claims
iPhone DuoTypical use Up to 24 hours Video playback Up to 44 hours when using the outer display Up to 31 hours when using the inner display Video playback (streamed) Up to 37 hours when using the outer display Up to 26 hours when using the inner display Dual built-in rechargeable lithium-ion batteries Fast-charge capable: Up to 50% charge in around 20 minutes with 60W-capable adapter or higher (available separately) paired with USB-C charging cable Up to 50% charge in around 30 minutes with 35W adapter or higher paired with MagSafe Charger (both available separately)
Galaxy S25 Ultra5000 mAh
Sources
iPhone Duo
Testing conducted by Apple in August 2026 using pre-production iPhone Duo units and software, subscribed to LTE and 5G networks, using a representative usage profile. Profile is based on the median usage values across iPhone users and reflects a combination of passive and active use of a variety of applications, including but not limited to messaging, photos, music, social media, video streaming, games, web browsing and navigation. iPhone Duo typical use based on equal usage between inner and outer displays. Battery life varies by use, configuration, mobile network, signal strength and other factors; actual results may vary based on usage. Testing conducted by Apple in July 2026 using pre‑production iPhone Duo units and software, subscribed to LTE and 5G networks. Video playback consisted of a repeated 2‑hour 23‑minute HDR movie purchased from the iTunes Store. Video playback (streamed) consisted of a repeated 3‑hour 1‑minute HDR movie purchased from the iTunes Store. All settings were default except: Bluetooth was paired with headphones; Wi‑Fi was associated with a network; the Wi‑Fi feature Ask to Join Networks, Auto‑Brightness and True Tone were turned off. Testing conducted by Apple in July 2026 using pre‑production iPhone Duo units and software, and either USB‑C Charge Cable or Apple MagSafe Chargers (1‑metre Model A3502 and 2‑metre Model A3503), both with Apple 40W Dynamic Power Adapter with 60W Max (Model A3351). Wired fast charge supported with 60W-capable (or higher) USB‑C cable and USB PD power adapters. Fast-charge testing conducted with drained iPhone Duo units in open configuration. Times measured from the appearance of the Apple logo as the unit started up. Charge time varies with adapter, settings, usage and environmental factors; actual results will vary.
Apple UK — iPhone Duo technical specificationsGalaxy S25 Ultra
Typical capacity. Samsung claims up to 31 hours of video playback. Real battery life depends on use.
Samsung UK Galaxy S25 Ultra technical specifications — SM-S938BZBGEUBManufacturer claims for the stated mode and equipment. Read each test condition; this is not measured everyday battery life.
Front camera specification
iPhone DuoOuter 12MP Center Stage camera ƒ/2.2 aperture Retina Flash Smart Take Kid Cue Photographic Styles 3 Improved low-light video at 1080p Tap to zoom and rotate Centre Stage for photos Ultra-stabilised video Dual Capture Centre Stage for video calls Photonic Engine Deep Fusion Smart HDR 5 Next-generation portraits with Focus and Depth Control Portrait Lighting with six effects Animoji and Memoji Night mode Wide colour capture for photos and Live Photos Lens correction Auto image stabilisation Burst mode 4K Dolby Vision video recording at 24 fps, 25 fps, 30 fps or 60 fps 1080p Dolby Vision video recording at 25 fps, 30 fps or 60 fps Cinematic mode up to 4K Dolby Vision at 30 fps Cinematic mode effects from video (Fusion Main) Slo-mo video support for 1080p at 120 fps Time-lapse video with stabilisation up to 4K Dolby Vision Night mode Time-lapse QuickTake video up to 4K at 60 fps in Dolby Vision Cinematic video stabilisation (4K, 1080p and 720p) Spatial Audio and stereo recording Wind noise reduction Audio Mix Inner Under-display FaceTime camera Centre Stage for video calls ƒ/1.8 aperture Tap to zoom and rotate Ultra-stabilised video 1080p video recording at 30 or 60 fps Animoji and Memoji in FaceTime Wide colour capture for photos and Live Photos Lens correction Auto image stabilisation QuickTake video at 1080p at 30 fps and 60 fps Spatial Audio and stereo recording Wind noise reduction Audio Mix
Galaxy S25 Ultra12.0 MP
Sources
Compare the camera hardware and recording modes. Matching megapixels or zoom do not mean identical cameras.
Configuration & compatibility details (4)
Selected nominal storage
iPhone Duo2000 GB
Galaxy S25 Ultra512 GB
Sources
Galaxy S25 Ultra
This listing is the 512 GB UK configuration (SM-S938BZBGEUB). Samsung UK also lists a 256 GB Galaxy S25 Ultra (SM-S938BZBDEUB), so a storage difference against another listing reflects the configurations compared, not a limit of the model.
Samsung UK Galaxy S25 Ultra technical specifications — SM-S938BZBGEUBA configuration choice: the storage tier of each exact variant compared. Most models are sold in several tiers, so this is not a difference between the models.
Selected storage; RAM remains unlisted
iPhone Duo2000 GB storage; RAM capacity is not listed by the manufacturer.
Galaxy S25 Ultra12 GB RAM; 512 GB storage
Sources
A configuration choice: the storage tier of each exact variant compared. Most models are sold in several tiers, so this is not a difference between the models.
Exact UK hardware, SIM and cellular specification
iPhone DuoUK A3720; Dual eSIM (two active eSIMs; stores eight or more eSIMs) iPhone Duo uses advanced eSIM technology for more convenience and security (not compatible with physical SIM cards). Learn more about eSIM Learn more about travelling with eSIM; Model A3720 * FDD-5G NR (Bands n1, n2, n3, n5, n7, n8, n12, n20, n25, n26, n28, n30, n66, n70, n75) TDD-5G NR (Bands n38, n40, n41, n48, n53, n77, n78, n79) FDD-LTE (Bands 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 30, 32, 66, 106) TDD-LTE (Bands 34, 38, 39, 40, 41, 42, 48, 53) UMTS/HSPA+ (850, 900, 1700/2100, 1900, 2100 MHz) GSM/EDGE (850, 900, 1800, 1900 MHz) Apple C2 cellular modem 5G (sub-6GHz) with 4x4 MIMO Gigabit LTE with 4x4 MIMO Apple N1 wireless networking chip Wi-Fi 7 (802.11be) with 2x2 MIMO Bluetooth 6 Thread networking technology Apple second-generation Ultra Wideband chip NFC with reader mode Express Cards with power reserve
Galaxy S25 UltraUK SM-S938BZBGEUB; 5G; dual SIM (2 nano-SIMs, nano-SIM + eSIM or 2 eSIMs)
Sources
iPhone Duo
* To identify your iPhone model number, see support.apple.com/en-gb/108044 . For details on 5G and LTE support, contact your network provider and see apple.com/uk/iphone/cellular . Mobile data technology support is based on iPhone model number and configuration for GSM networks. Data plan required. 5G, Gigabit LTE, VoLTE and Wi‑Fi calling are available in selected markets and through selected network providers. Speeds are based on theoretical throughput and vary based on site conditions and network. For details on 5G and LTE support, contact your provider and see apple.com/uk/iphone/cellular . Wi‑Fi 7 available in countries and regions where supported. Ultra Wideband availability varies by region.
Apple UK — iPhone Duo technical specificationsGalaxy S25 Ultra
Samsung lists: Dual-SIM; Nano-SIM (4FF), Embedded-SIM; SIM 1 + SIM 2 / SIM 1 + eSIM / Dual eSIM; 2G GSM, 3G WCDMA, 4G LTE FDD, 4G LTE TDD, 5G Sub6 FDD, 5G Sub6 TDD, 5G Sub6 SDL. Check carrier support if you plan to use it outside the UK.
Samsung UK Galaxy S25 Ultra technical specifications — SM-S938BZBGEUBThese descriptions or measurements differ. Wording alone does not establish a different capability; check the exact configuration.
UK model wireless capabilities
iPhone DuoModel A3720 * FDD-5G NR (Bands n1, n2, n3, n5, n7, n8, n12, n20, n25, n26, n28, n30, n66, n70, n75) TDD-5G NR (Bands n38, n40, n41, n48, n53, n77, n78, n79) FDD-LTE (Bands 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 30, 32, 66, 106) TDD-LTE (Bands 34, 38, 39, 40, 41, 42, 48, 53) UMTS/HSPA+ (850, 900, 1700/2100, 1900, 2100 MHz) GSM/EDGE (850, 900, 1800, 1900 MHz) Apple C2 cellular modem 5G (sub-6GHz) with 4x4 MIMO Gigabit LTE with 4x4 MIMO Apple N1 wireless networking chip Wi-Fi 7 (802.11be) with 2x2 MIMO Bluetooth 6 Thread networking technology Apple second-generation Ultra Wideband chip NFC with reader mode Express Cards with power reserve
Galaxy S25 UltraWi-Fi 7 (2.4, 5 and 6 GHz); Bluetooth 5.4
Sources
iPhone Duo
* To identify your iPhone model number, see support.apple.com/en-gb/108044 . For details on 5G and LTE support, contact your network provider and see apple.com/uk/iphone/cellular . Mobile data technology support is based on iPhone model number and configuration for GSM networks. Data plan required. 5G, Gigabit LTE, VoLTE and Wi‑Fi calling are available in selected markets and through selected network providers. Speeds are based on theoretical throughput and vary based on site conditions and network. For details on 5G and LTE support, contact your provider and see apple.com/uk/iphone/cellular . Wi‑Fi 7 available in countries and regions where supported. Ultra Wideband availability varies by region.
Apple UK — iPhone Duo technical specificationsGalaxy S25 Ultra
Samsung lists Wi-Fi 802.11a/b/g/n/ac/ax/be 2.4GHz+5GHz+6GHz, EHT320, MIMO, 4096-QAM and Bluetooth v5.4.
Samsung UK Galaxy S25 Ultra technical specifications — SM-S938BZBGEUBAn exact-variant identifier or regional network listing, not a difference in capability. Check the bands and model code for your carrier and region.
Missing or non-comparable evidence (75)
Rear Camera - OIS
iPhone DuoNot verified
Galaxy S25 UltraYes
Sources
iPhone Duo
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Rear Camera - Auto Focus
iPhone DuoNot verified
Galaxy S25 UltraYes
Sources
iPhone Duo
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Front Camera - Auto Focus
iPhone DuoNot verified
Galaxy S25 UltraYes
Sources
iPhone Duo
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Claimed video playback
iPhone DuoNot verified
Galaxy S25 Ultra31 hours
Sources
iPhone Duo
Not verified for this exact model.
No source recorded for this side.
Galaxy S25 Ultra
Video Playback Time (Hours); manufacturer up-to claim. Protocols differ across brands.
Samsung UK Galaxy S25 Ultra technical specifications — SM-S938BZBGEUBEvidence is missing or conflicting on at least one side. This is not a verified difference.
Typical battery capacity
iPhone DuoNot verified
Galaxy S25 Ultra5000 mAh
Sources
iPhone Duo
No source recorded for this side.
Galaxy S25 Ultra
Manufacturer capacity; not an endurance test.
Samsung UK Galaxy S25 Ultra technical specifications — SM-S938BZBGEUBEvidence is missing or conflicting on at least one side. This is not a verified difference.
Maximum refresh rate
iPhone DuoNot verified
Galaxy S25 Ultra120 Hz
Sources
iPhone Duo
Not verified for this exact model.
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Physical RAM capacity
iPhone DuoNot verified
Galaxy S25 Ultra12 GB
Sources
iPhone Duo
Not listed for this exact UK configuration by the cited manufacturer specifications.
Apple UK — iPhone Duo technical specificationsEvidence is missing or conflicting on at least one side. This is not a verified difference.
Expandable storage
iPhone DuoNot verified
Galaxy S25 UltraNot verified
Sources
iPhone Duo
Not verified for this exact model.
No source recorded for this side.
Galaxy S25 Ultra
Samsung's specification does not state whether a memory card is supported.
Samsung UK Galaxy S25 Ultra technical specifications — SM-S938BZBGEUBEvidence is missing or conflicting on at least one side. This is not a verified difference.
Published support term
iPhone DuoNot verified
Galaxy S25 UltraNot verified
Sources
iPhone Duo
Not verified for this exact model.
No source recorded for this side.
Galaxy S25 Ultra
Not verified for this exact model.
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Manufacturer operating system
iPhone DuoiOS 27
Galaxy S25 UltraNot verified
Sources
Galaxy S25 Ultra
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Cover glass
iPhone DuoNot verified
Galaxy S25 UltraCorning Gorilla Armor 2 (front)
Sources
iPhone Duo
No source recorded for this side.
Galaxy S25 Ultra
Samsung states Gorilla Armor 2 on the front and does not name the rear glass. Titanium applies to the frame only. No drop-proof guarantee is claimed.
Samsung UK Galaxy S25 Ultra product pageEvidence is missing or conflicting on at least one side. This is not a verified difference.
Main display resolution
iPhone DuoNot verified
Galaxy S25 Ultra3120 x 1440 (Quad HD+)
Sources
iPhone Duo
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
eSIM only
iPhone DuoNot verified
Galaxy S25 UltraNo
Sources
iPhone Duo
Not verified for this exact model.
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Headphone jack
iPhone DuoNot verified
Galaxy S25 UltraNot verified
Sources
iPhone Duo
Not verified for this exact model.
No source recorded for this side.
Galaxy S25 Ultra
Samsung lists USB Type-C under Earjack and does not say whether there is also a separate 3.5 mm jack.
Samsung UK Galaxy S25 Ultra technical specifications — SM-S938BZBGEUBEvidence is missing or conflicting on at least one side. This is not a verified difference.
Ingress protection
iPhone DuoNot verified
Galaxy S25 UltraIP68
Sources
iPhone Duo
Not verified for this exact model.
No source recorded for this side.
Galaxy S25 Ultra
Samsung laboratory claim: submersion in up to 1.5 metres of fresh water for up to 30 minutes. Not advised for beach or pool use; resistance is not permanent and may diminish with wear.
Samsung UK Galaxy S25 Ultra product pageEvidence is missing or conflicting on at least one side. This is not a verified difference.
Native telephoto reach
iPhone DuoNot verified
Galaxy S25 Ultra5×
Sources
iPhone Duo
Not verified for this exact model.
No source recorded for this side.
Galaxy S25 Ultra
From the published "Rear Camera - Zoom" listing: "Optical Zoom 3x and 5x". The longest listed optical zoom is shown; optical-quality and digital zoom are excluded.
Samsung UK Galaxy S25 Ultra technical specifications — SM-S938BZBGEUBEvidence is missing or conflicting on at least one side. This is not a verified difference.
Optical-quality zoom
iPhone DuoNot verified
Galaxy S25 UltraNot verified
Sources
iPhone Duo
Not verified for this exact model.
No source recorded for this side.
Galaxy S25 Ultra
Not verified for this exact model.
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Panel technology
iPhone DuoNot verified
Galaxy S25 UltraDynamic AMOLED 2X
Sources
iPhone Duo
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Published peak brightness
iPhone DuoNot verified
Galaxy S25 UltraNot verified
Sources
iPhone Duo
Not verified for this exact model.
No source recorded for this side.
Galaxy S25 Ultra
Not verified for this exact model.
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Pixel density
iPhone DuoNot verified
Galaxy S25 UltraNot verified
Sources
iPhone Duo
Not verified for this exact model.
No source recorded for this side.
Galaxy S25 Ultra
Not verified for this exact model.
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
2G GSM
iPhone DuoNot verified
Galaxy S25 UltraGSM850, GSM900, DCS1800, PCS1900
Sources
iPhone Duo
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
3G UMTS
iPhone DuoNot verified
Galaxy S25 UltraB1(2100), B2(1900), B4(AWS), B5(850), B8(900)
Sources
iPhone Duo
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
4G FDD LTE
iPhone DuoNot verified
Galaxy S25 UltraB1(2100), B2(1900), B3(1800), B4(AWS), B5(850), B7(2600), B8(900), B12(700), B13(700), B17(700), B18(800), B19(800), B20(800), B25(1900), B26(850), B28(700), B32(1500), B66(AWS-3)
Sources
iPhone Duo
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
4G TDD LTE
iPhone DuoNot verified
Galaxy S25 UltraB38(2600), B39(1900), B40(2300), B41(2500)
Sources
iPhone Duo
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
5G FDD Sub6
iPhone DuoNot verified
Galaxy S25 UltraN1(2100), N2(1900), N3(1800), N5(850), N7(2600), N8(900), N12(700), N20(800), N25(1900), N26(850), N28(700), N66(AWS-3)
Sources
iPhone Duo
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
5G SDL Sub6
iPhone DuoNot verified
Galaxy S25 UltraN75(1500+)
Sources
iPhone Duo
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
5G TDD Sub6
iPhone DuoNot verified
Galaxy S25 UltraN38(2600), N40(2300), N41(2500), N77(3700), N78(3500)
Sources
iPhone Duo
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Available Storage (GB)
iPhone DuoNot verified
Galaxy S25 Ultra474.2
Sources
iPhone Duo
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Bluetooth Hearing Aid Support
iPhone DuoNot verified
Galaxy S25 UltraAndroid Audio Streaming for Hearing Aid (ASHA)
Sources
iPhone Duo
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Bluetooth Version
iPhone DuoNot verified
Galaxy S25 UltraBluetooth v5.4
Sources
iPhone Duo
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Colour Depth (Main Display)
iPhone DuoNot verified
Galaxy S25 Ultra16M
Sources
iPhone Duo
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Earjack
iPhone DuoNot verified
Galaxy S25 UltraUSB Type-C
Sources
iPhone Duo
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Energy Efficiency Class
iPhone DuoNot verified
Galaxy S25 UltraB
Sources
iPhone Duo
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Form Factor
iPhone DuoNot verified
Galaxy S25 UltraTouchscreen Bar
Sources
iPhone Duo
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Front Camera - F Number
iPhone DuoNot verified
Galaxy S25 UltraF2.2
Sources
iPhone Duo
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Front Camera - Resolution
iPhone DuoNot verified
Galaxy S25 Ultra12.0 MP
Sources
iPhone Duo
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Infra
iPhone DuoNot verified
Galaxy S25 Ultra2G GSM, 3G WCDMA, 4G LTE FDD, 4G LTE TDD, 5G Sub6 FDD, 5G Sub6 TDD, 5G Sub6 SDL
Sources
iPhone Duo
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Location Technology
iPhone DuoNot verified
Galaxy S25 UltraGPS, Glonass, Beidou, Galileo, QZSS
Sources
iPhone Duo
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
MHL
iPhone DuoNot verified
Galaxy S25 UltraNo
Sources
iPhone Duo
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Minimum Battery Endurance in Cycles
iPhone DuoNot verified
Galaxy S25 Ultra2000
Sources
iPhone Duo
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Mobile TV
iPhone DuoNot verified
Galaxy S25 UltraNo
Sources
iPhone Duo
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
NFC
iPhone DuoNot verified
Galaxy S25 UltraYes
Sources
iPhone Duo
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Number of SIM
iPhone DuoNot verified
Galaxy S25 UltraDual-SIM
Sources
iPhone Duo
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
OS
iPhone DuoNot verified
Galaxy S25 UltraAndroid
Sources
iPhone Duo
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
PC Sync.
iPhone DuoNot verified
Galaxy S25 UltraSmart Switch (PC version)
Sources
iPhone Duo
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Rear Camera - F Number (Multiple)
iPhone DuoNot verified
Galaxy S25 UltraF1.7, F3.4, F1.9, F2.4
Sources
iPhone Duo
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Rear Camera - Flash
iPhone DuoNot verified
Galaxy S25 UltraYes
Sources
iPhone Duo
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Rear Camera - Resolution (Multiple)
iPhone DuoNot verified
Galaxy S25 Ultra200.0 MP + 50.0 MP + 50.0 MP + 10.0 MP
Sources
iPhone Duo
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Rear Camera - Zoom
iPhone DuoNot verified
Galaxy S25 UltraOptical Zoom 3x and 5x, Optical quality Zoom 2x and 10x (Enabled by Adaptive Pixel sensor), Digital Zoom up to 100x
Sources
iPhone Duo
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Removable
iPhone DuoNot verified
Galaxy S25 UltraNo
Sources
iPhone Duo
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
S Pen Support
iPhone DuoNot verified
Galaxy S25 UltraYes
Sources
iPhone Duo
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Samsung DeX Support
iPhone DuoNot verified
Galaxy S25 UltraYes
Sources
iPhone Duo
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Sensors
iPhone DuoNot verified
Galaxy S25 UltraAccelerometer, Barometer, Fingerprint Sensor, Gyro Sensor, Geomagnetic Sensor, Hall Sensor, Light Sensor, Proximity Sensor
Sources
iPhone Duo
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
SIM size
iPhone DuoNot verified
Galaxy S25 UltraNano-SIM (4FF), Embedded-SIM
Sources
iPhone Duo
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
SIM Slot Type
iPhone DuoNot verified
Galaxy S25 UltraSIM 1 + SIM 2 / SIM 1 + eSIM / Dual eSIM
Sources
iPhone Duo
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Slow Motion
iPhone DuoNot verified
Galaxy S25 Ultra240fps @FHD, 120fps @FHD, 120fps @UHD
Sources
iPhone Duo
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
SmartThings Support
iPhone DuoNot verified
Galaxy S25 UltraYes
Sources
iPhone Duo
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Stereo Support
iPhone DuoNot verified
Galaxy S25 UltraYes
Sources
iPhone Duo
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
USB Interface
iPhone DuoNot verified
Galaxy S25 UltraUSB Type-C
Sources
iPhone Duo
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
USB Version
iPhone DuoNot verified
Galaxy S25 UltraUSB 3.2 Gen 1
Sources
iPhone Duo
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
UWB (Ultra-Wideband)
iPhone DuoNot verified
Galaxy S25 UltraYes
Sources
iPhone Duo
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Video Playing Resolution
iPhone DuoNot verified
Galaxy S25 UltraUHD 8K (7680 x 4320)@60fps
Sources
iPhone Duo
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Video Recording Resolution
iPhone DuoNot verified
Galaxy S25 UltraUHD 8K (7680 x 4320)@30fps
Sources
iPhone Duo
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Wi-Fi
iPhone DuoNot verified
Galaxy S25 Ultra802.11a/b/g/n/ac/ax/be 2.4GHz+5GHz+6GHz, EHT320, MIMO, 4096-QAM
Sources
iPhone Duo
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Wi-Fi Direct
iPhone DuoNot verified
Galaxy S25 UltraYes
Sources
iPhone Duo
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Rear camera modules
iPhone DuoNot verified
Galaxy S25 Ultra4
Sources
iPhone Duo
Not verified for this exact model.
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Reverse wireless charging
iPhone DuoNot verified
Galaxy S25 UltraNot verified
Sources
iPhone Duo
Not verified for this exact model.
No source recorded for this side.
Galaxy S25 Ultra
Not verified for this exact model.
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Screen size
iPhone DuoNot verified
Galaxy S25 Ultra6.9 in
Sources
iPhone Duo
Not verified for this exact model.
No source recorded for this side.
Galaxy S25 Ultra
Full-rectangle nominal diagonal; rounded corners reduce viewable area.
Samsung UK Galaxy S25 Ultra technical specifications — SM-S938BZBGEUBEvidence is missing or conflicting on at least one side. This is not a verified difference.
Manufacturer-listed sensors
iPhone DuoTouch ID fingerprint sensor Barometer High dynamic range gyro High-g accelerometer Proximity sensor Four ambient light sensors
Galaxy S25 UltraNot verified
Sources
Galaxy S25 Ultra
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Promised update duration
iPhone DuoNot verified
Galaxy S25 UltraNot verified
Sources
iPhone Duo
Not listed for this exact UK configuration by the cited manufacturer specifications.
Apple UK — iPhone Duo technical specificationsGalaxy S25 Ultra
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
8K recording
iPhone DuoNot verified
Galaxy S25 UltraYes
Sources
iPhone Duo
Not verified for this exact model.
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Wireless charging
iPhone DuoNot verified
Galaxy S25 UltraNot verified
Sources
iPhone Duo
Not verified for this exact model.
No source recorded for this side.
Galaxy S25 Ultra
Not verified for this exact model.
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Height
iPhone DuoNot verified
Galaxy S25 Ultra162.8 mm
Sources
iPhone Duo
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Thickness
iPhone DuoNot verified
Galaxy S25 Ultra8.2 mm
Sources
iPhone Duo
Not verified for this exact model.
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Width
In Visual factsiPhone DuoNot verified
Galaxy S25 Ultra77.6 mm
Sources
iPhone Duo
Not verified for this exact model.
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
0 shared fields have the same recorded value.
COMPARE THE DETAILS
Full specifications
All specs91 specificationsiPhone DuoGalaxy S25 Ultra
iPhone DuoGalaxy S25 UltraWeightDiffers
Sources
254g
Manufacturer device mass
218g
Width
Sources
iPhone DuoNo source recorded
Not verifiedNot verified for this exact model.
77.6mm
Thickness
Sources
iPhone DuoNo source recorded
Not verifiedNot verified for this exact model.
8.2mm
DimensionsDiffers
Sources
Open: Width: 164.6 mm; Height: 117.8 mm; Depth: 5.2 mm | Closed: Width: 84.1 mm; Height: 117.8 mm; Depth: 11.3 mmOpen and closed dimensions are separate source states.
162.8 x 77.6 x 8.2 mm (height × width × depth)
ColourDiffers
Sources
Galaxy S25 UltraSamsung UK current phone configurations and part numbers
Star White
Titanium Silverblue
Form factorDiffers
Sources
foldable
slab
Height
Sources
iPhone DuoNo source recorded
Not verified
162.8 mm
Form Factor
Sources
iPhone DuoNo source recorded
Not verified
Touchscreen Bar
Screen size
Sources
iPhone DuoNo source recorded
Not verifiedNot verified for this exact model.
6.9″Full-rectangle nominal diagonal; rounded corners reduce viewable area.
Maximum refresh rate
Sources
iPhone DuoNo source recorded
Not verifiedNot verified for this exact model.
120Hz
Display specificationDiffers
Sources
Inner display Super Retina XDR display 7.6-inch (diagonal) all-screen OLED folding display 1878x2670-pixel resolution at 430 ppi Nano-texture finish Wide-angle OLEDs; Outer display Super Retina XDR display 5.4-inch (diagonal) all-screen OLED display 1398x2034-pixel resolution at 460 ppi; Both displays Dynamic Island Always-On display ProMotion technology with adaptive refresh rates up to 120Hz HDR display True Tone Wide colour (P3) Haptic Touch 2,000,000:1 contrast ratio (typical) 1,000 nits max brightness (typical); 1,600 nits peak brightness (HDR); 3,000 nits peak brightness (outdoor); 1 nit minimum brightness Fingerprint-resistant oleophobic coating Anti-reflective coating Support for display of multiple languages and characters simultaneously Supports Apple Pencil (USB-C) The iPhone Duo displays have rounded corners that follow a beautiful curved design, and these corners are within a standard rectangle. When measured as a standard rectangular shape, the screens are 7.58 and 5.36 inches diagonally (actual viewable area is less).Coming later this year.
6.9-inch Dynamic AMOLED 2X; 3120 × 1440; up to 120 HzMeasured as a full rectangle: 174.2 mm (6.9-inch); 172.2 mm (6.8-inch) with rounded corners. Resolution class: Quad HD+.
Main display resolution
Sources
iPhone DuoNo source recorded
Not verified
3120 x 1440 (Quad HD+)
Colour Depth (Main Display)
Sources
iPhone DuoNo source recorded
Not verified
16M
Native telephoto reach
Sources
iPhone DuoNo source recorded
Not verifiedNot verified for this exact model.
5×From the published "Rear Camera - Zoom" listing: "Optical Zoom 3x and 5x". The longest listed optical zoom is shown; optical-quality and digital zoom are excluded.
Rear camera modules
Sources
iPhone DuoNo source recorded
Not verifiedNot verified for this exact model.
4
8K video recording
Sources
iPhone DuoNo source recorded
Not verified8K recording · Not verified for this exact model.
Yes
Camera systemDiffers
Sources
48MP Dual Fusion camera system 48MP Fusion Main: 26mm, ƒ/1.6 aperture, sensor-shift optical image stabilisation, Hybrid Focus Pixels, super-high-resolution photos (24MP and 48MP) Also enables 12MP optical-quality 2x Telephoto: 52mm, ƒ/1.6 aperture, sensor-shift optical image stabilisation, Hybrid Focus Pixels 48MP Fusion Ultra Wide: 13mm, ƒ/2.2 aperture and 120° field of view, Hybrid Focus Pixels, super-high-resolution photos (24MP and 48MP) 2x optical-quality zoom in, 2x optical zoom out; 4x optical-quality zoom range Digital zoom up to 10x Smart Take Duo Preview Photographic Styles 3 Smart focus tracking Customisable default lens (Fusion Main) Sapphire crystal lens cover True Tone flash Photonic Engine Deep Fusion Smart HDR 5 Next-generation portraits with Focus and Depth Control Portrait Lighting with six effects Night mode Panorama (up to 63MP) 48MP macro photography Wide colour capture for photos and Live Photos Lens correction (Fusion Ultra Wide) Advanced red-eye correction Auto image stabilisation Burst mode Photo geotagging Image formats captured: HEIF and JPEG
Rear: 200 MP + 50 MP + 50 MP + 10 MP; Front: 12 MP; Video: up to 8K 30 fpsVideo recording resolution: UHD 8K (7680 x 4320) at 30 fps.
Front cameraDiffers
Sources
Outer 12MP Center Stage camera ƒ/2.2 aperture Retina Flash Smart Take Kid Cue Photographic Styles 3 Improved low-light video at 1080p Tap to zoom and rotate Centre Stage for photos Ultra-stabilised video Dual Capture Centre Stage for video calls Photonic Engine Deep Fusion Smart HDR 5 Next-generation portraits with Focus and Depth Control Portrait Lighting with six effects Animoji and Memoji Night mode Wide colour capture for photos and Live Photos Lens correction Auto image stabilisation Burst mode 4K Dolby Vision video recording at 24 fps, 25 fps, 30 fps or 60 fps 1080p Dolby Vision video recording at 25 fps, 30 fps or 60 fps Cinematic mode up to 4K Dolby Vision at 30 fps Cinematic mode effects from video (Fusion Main) Slo-mo video support for 1080p at 120 fps Time-lapse video with stabilisation up to 4K Dolby Vision Night mode Time-lapse QuickTake video up to 4K at 60 fps in Dolby Vision Cinematic video stabilisation (4K, 1080p and 720p) Spatial Audio and stereo recording Wind noise reduction Audio Mix Inner Under-display FaceTime camera Centre Stage for video calls ƒ/1.8 aperture Tap to zoom and rotate Ultra-stabilised video 1080p video recording at 30 or 60 fps Animoji and Memoji in FaceTime Wide colour capture for photos and Live Photos Lens correction Auto image stabilisation QuickTake video at 1080p at 30 fps and 60 fps Spatial Audio and stereo recording Wind noise reduction Audio Mix
12.0 MP
Rear Camera - Resolution (Multiple)
Sources
iPhone DuoNo source recorded
Not verified
200.0 MP + 50.0 MP + 50.0 MP + 10.0 MP
Rear Camera - F Number (Multiple)
Sources
iPhone DuoNo source recorded
Not verified
F1.7, F3.4, F1.9, F2.4
Rear Camera - Zoom
Sources
iPhone DuoNo source recorded
Not verified
Optical Zoom 3x and 5x, Optical quality Zoom 2x and 10x (Enabled by Adaptive Pixel sensor), Digital Zoom up to 100x
Front Camera - Resolution
Sources
iPhone DuoNo source recorded
Not verified
12.0 MP
Front Camera - F Number
Sources
iPhone DuoNo source recorded
Not verified
F2.2
Rear Camera - Flash
Sources
iPhone DuoNo source recorded
Not verified
Yes
Rear Camera - Auto Focus
Sources
iPhone DuoNo source recorded
Not verified
Yes
Rear Camera - OIS
Sources
iPhone DuoNo source recorded
Not verified
Yes
Front Camera - Auto Focus
Sources
iPhone DuoNo source recorded
Not verified
Yes
Claimed video playbackUp-to manufacturer claims. Playback protocols differ.
Sources
iPhone DuoNo source recorded
Not verifiedNot verified for this exact model.
31 hoursVideo Playback Time (Hours); manufacturer up-to claim. Protocols differ across brands.
Battery and chargingDiffers
Sources
Typical use Up to 24 hours Video playback Up to 44 hours when using the outer display Up to 31 hours when using the inner display Video playback (streamed) Up to 37 hours when using the outer display Up to 26 hours when using the inner display Dual built-in rechargeable lithium-ion batteries Fast-charge capable: Up to 50% charge in around 20 minutes with 60W-capable adapter or higher (available separately) paired with USB-C charging cable Up to 50% charge in around 30 minutes with 35W adapter or higher paired with MagSafe Charger (both available separately)Testing conducted by Apple in August 2026 using pre-production iPhone Duo units and software, subscribed to LTE and 5G networks, using a representative usage profile. Profile is based on the median usage values across iPhone users and reflects a combination of passive and active use of a variety of applications, including but not limited to messaging, photos, music, social media, video streaming, games, web browsing and navigation. iPhone Duo typical use based on equal usage between inner and outer displays. Battery life varies by use, configuration, mobile network, signal strength and other factors; actual results may vary based on usage. Testing conducted by Apple in July 2026 using pre‑production iPhone Duo units and software, subscribed to LTE and 5G networks. Video playback consisted of a repeated 2‑hour 23‑minute HDR movie purchased from the iTunes Store. Video playback (streamed) consisted of a repeated 3‑hour 1‑minute HDR movie purchased from the iTunes Store. All settings were default except: Bluetooth was paired with headphones; Wi‑Fi was associated with a network; the Wi‑Fi feature Ask to Join Networks, Auto‑Brightness and True Tone were turned off. Testing conducted by Apple in July 2026 using pre‑production iPhone Duo units and software, and either USB‑C Charge Cable or Apple MagSafe Chargers (1‑metre Model A3502 and 2‑metre Model A3503), both with Apple 40W Dynamic Power Adapter with 60W Max (Model A3351). Wired fast charge supported with 60W-capable (or higher) USB‑C cable and USB PD power adapters. Fast-charge testing conducted with drained iPhone Duo units in open configuration. Times measured from the appearance of the Apple logo as the unit started up. Charge time varies with adapter, settings, usage and environmental factors; actual results will vary.
5000 mAhTypical capacity. Samsung claims up to 31 hours of video playback. Real battery life depends on use.
Typical battery capacity
Sources
iPhone DuoNo source recorded
Not verified
5000 mAhManufacturer capacity; not an endurance test.
Minimum Battery Endurance in Cycles
Sources
iPhone DuoNo source recorded
Not verified
2000
Update policyDiffers
Sources
No fixed update duration is listed in this manufacturer technical source.No support years or promised major-version count are inferred. The installed operating system is listed separately.
Security updates until 31 January 2032This is an end date for security updates, not a number of years remaining from purchase.
Manufacturer operating system
Sources
Galaxy S25 UltraNo source recorded
iOS 27
Not verified
S Pen Support
Sources
iPhone DuoNo source recorded
Not verified
Yes
Stereo Support
Sources
iPhone DuoNo source recorded
Not verified
Yes
Samsung DeX Support
Sources
iPhone DuoNo source recorded
Not verified
Yes
Bluetooth Hearing Aid Support
Sources
iPhone DuoNo source recorded
Not verified
Android Audio Streaming for Hearing Aid (ASHA)
SmartThings Support
Sources
iPhone DuoNo source recorded
Not verified
Yes
ChipsetDiffers
A20 Pro chip 6-core CPU with 2 super cores and 4 efficiency cores 7-core GPU with Neural Accelerators Dual 16-core Neural Engine Hardware-accelerated ray tracing
Snapdragon 8 Elite for GalaxyOcta-core; CPU clock groups: 4.47 / 3.5 GHz. Named on Samsung's UK Galaxy S25 Ultra page. Manufacturer specification, not a performance benchmark.
RAM and storage configurationConfiguration
2000 GB storage; RAM capacity is not listed by the manufacturer.
12 GB RAM; 512 GB storage
Regional SIM / network configurationConfiguration
Sources
UK A3720; Dual eSIM (two active eSIMs; stores eight or more eSIMs) iPhone Duo uses advanced eSIM technology for more convenience and security (not compatible with physical SIM cards). Learn more about eSIM Learn more about travelling with eSIM; Model A3720 * FDD-5G NR (Bands n1, n2, n3, n5, n7, n8, n12, n20, n25, n26, n28, n30, n66, n70, n75) TDD-5G NR (Bands n38, n40, n41, n48, n53, n77, n78, n79) FDD-LTE (Bands 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 30, 32, 66, 106) TDD-LTE (Bands 34, 38, 39, 40, 41, 42, 48, 53) UMTS/HSPA+ (850, 900, 1700/2100, 1900, 2100 MHz) GSM/EDGE (850, 900, 1800, 1900 MHz) Apple C2 cellular modem 5G (sub-6GHz) with 4x4 MIMO Gigabit LTE with 4x4 MIMO Apple N1 wireless networking chip Wi-Fi 7 (802.11be) with 2x2 MIMO Bluetooth 6 Thread networking technology Apple second-generation Ultra Wideband chip NFC with reader mode Express Cards with power reserve* To identify your iPhone model number, see support.apple.com/en-gb/108044 . For details on 5G and LTE support, contact your network provider and see apple.com/uk/iphone/cellular . Mobile data technology support is based on iPhone model number and configuration for GSM networks. Data plan required. 5G, Gigabit LTE, VoLTE and Wi‑Fi calling are available in selected markets and through selected network providers. Speeds are based on theoretical throughput and vary based on site conditions and network. For details on 5G and LTE support, contact your provider and see apple.com/uk/iphone/cellular . Wi‑Fi 7 available in countries and regions where supported. Ultra Wideband availability varies by region.
UK SM-S938BZBGEUB; 5G; dual SIM (2 nano-SIMs, nano-SIM + eSIM or 2 eSIMs)Samsung lists: Dual-SIM; Nano-SIM (4FF), Embedded-SIM; SIM 1 + SIM 2 / SIM 1 + eSIM / Dual eSIM; 2G GSM, 3G WCDMA, 4G LTE FDD, 4G LTE TDD, 5G Sub6 FDD, 5G Sub6 TDD, 5G Sub6 SDL. Check carrier support if you plan to use it outside the UK.
StorageConfiguration
Sources
2000 GB
512 GBThis listing is the 512 GB UK configuration (SM-S938BZBGEUB). Samsung UK also lists a 256 GB Galaxy S25 Ultra (SM-S938BZBDEUB), so a storage difference against another listing reflects the configurations compared, not a limit of the model.
RAM
Sources
Not verifiedNot listed for this exact UK configuration by the cited manufacturer specifications.
12 GB
Wireless connectivityConfiguration
Sources
Model A3720 * FDD-5G NR (Bands n1, n2, n3, n5, n7, n8, n12, n20, n25, n26, n28, n30, n66, n70, n75) TDD-5G NR (Bands n38, n40, n41, n48, n53, n77, n78, n79) FDD-LTE (Bands 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 30, 32, 66, 106) TDD-LTE (Bands 34, 38, 39, 40, 41, 42, 48, 53) UMTS/HSPA+ (850, 900, 1700/2100, 1900, 2100 MHz) GSM/EDGE (850, 900, 1800, 1900 MHz) Apple C2 cellular modem 5G (sub-6GHz) with 4x4 MIMO Gigabit LTE with 4x4 MIMO Apple N1 wireless networking chip Wi-Fi 7 (802.11be) with 2x2 MIMO Bluetooth 6 Thread networking technology Apple second-generation Ultra Wideband chip NFC with reader mode Express Cards with power reserve* To identify your iPhone model number, see support.apple.com/en-gb/108044 . For details on 5G and LTE support, contact your network provider and see apple.com/uk/iphone/cellular . Mobile data technology support is based on iPhone model number and configuration for GSM networks. Data plan required. 5G, Gigabit LTE, VoLTE and Wi‑Fi calling are available in selected markets and through selected network providers. Speeds are based on theoretical throughput and vary based on site conditions and network. For details on 5G and LTE support, contact your provider and see apple.com/uk/iphone/cellular . Wi‑Fi 7 available in countries and regions where supported. Ultra Wideband availability varies by region.
Wi-Fi 7 (2.4, 5 and 6 GHz); Bluetooth 5.4Samsung lists Wi-Fi 802.11a/b/g/n/ac/ax/be 2.4GHz+5GHz+6GHz, EHT320, MIMO, 4096-QAM and Bluetooth v5.4.
USB connectionDiffers
Sources
USB-C connector with support for: Charging DisplayPort USB 3 (up to 10Gb/s)
USB Type-C; USB 3.2 Gen 1
Manufacturer-listed sensors
Sources
Galaxy S25 UltraNo source recorded
Touch ID fingerprint sensor Barometer High dynamic range gyro High-g accelerometer Proximity sensor Four ambient light sensors
Not verified
eSIM only
Sources
iPhone DuoNo source recorded
Not verifiedNot verified for this exact model.
No
Ingress protection
Sources
iPhone DuoNo source recorded
Galaxy S25 UltraSamsung UK Galaxy S25 Ultra product page
Not verifiedNot verified for this exact model.
IP68Samsung laboratory claim: submersion in up to 1.5 metres of fresh water for up to 30 minutes. Not advised for beach or pool use; resistance is not permanent and may diminish with wear.
Panel technology
Sources
iPhone DuoNo source recorded
Not verified
Dynamic AMOLED 2X
Video Recording Resolution
Sources
iPhone DuoNo source recorded
Not verified
UHD 8K (7680 x 4320)@30fps
Slow Motion
Sources
iPhone DuoNo source recorded
Not verified
240fps @FHD, 120fps @FHD, 120fps @UHD
Available Storage (GB)
Sources
iPhone DuoNo source recorded
Not verified
474.2
Number of SIM
Sources
iPhone DuoNo source recorded
Not verified
Dual-SIM
SIM size
Sources
iPhone DuoNo source recorded
Not verified
Nano-SIM (4FF), Embedded-SIM
SIM Slot Type
Sources
iPhone DuoNo source recorded
Not verified
SIM 1 + SIM 2 / SIM 1 + eSIM / Dual eSIM
Infra
Sources
iPhone DuoNo source recorded
Not verified
2G GSM, 3G WCDMA, 4G LTE FDD, 4G LTE TDD, 5G Sub6 FDD, 5G Sub6 TDD, 5G Sub6 SDL
2G GSM
Sources
iPhone DuoNo source recorded
Not verified
GSM850, GSM900, DCS1800, PCS1900
3G UMTS
Sources
iPhone DuoNo source recorded
Not verified
B1(2100), B2(1900), B4(AWS), B5(850), B8(900)
4G FDD LTE
Sources
iPhone DuoNo source recorded
Not verified
B1(2100), B2(1900), B3(1800), B4(AWS), B5(850), B7(2600), B8(900), B12(700), B13(700), B17(700), B18(800), B19(800), B20(800), B25(1900), B26(850), B28(700), B32(1500), B66(AWS-3)
4G TDD LTE
Sources
iPhone DuoNo source recorded
Not verified
B38(2600), B39(1900), B40(2300), B41(2500)
5G FDD Sub6
Sources
iPhone DuoNo source recorded
Not verified
N1(2100), N2(1900), N3(1800), N5(850), N7(2600), N8(900), N12(700), N20(800), N25(1900), N26(850), N28(700), N66(AWS-3)
5G TDD Sub6
Sources
iPhone DuoNo source recorded
Not verified
N38(2600), N40(2300), N41(2500), N77(3700), N78(3500)
5G SDL Sub6
Sources
iPhone DuoNo source recorded
Not verified
N75(1500+)
USB Interface
Sources
iPhone DuoNo source recorded
Not verified
USB Type-C
USB Version
Sources
iPhone DuoNo source recorded
Not verified
USB 3.2 Gen 1
Location Technology
Sources
iPhone DuoNo source recorded
Not verified
GPS, Glonass, Beidou, Galileo, QZSS
Earjack
Sources
iPhone DuoNo source recorded
Not verified
USB Type-C
MHL
Sources
iPhone DuoNo source recorded
Not verified
No
Wi-Fi
Sources
iPhone DuoNo source recorded
Not verified
802.11a/b/g/n/ac/ax/be 2.4GHz+5GHz+6GHz, EHT320, MIMO, 4096-QAM
Wi-Fi Direct
Sources
iPhone DuoNo source recorded
Not verified
Yes
Bluetooth Version
Sources
iPhone DuoNo source recorded
Not verified
Bluetooth v5.4
NFC
Sources
iPhone DuoNo source recorded
Not verified
Yes
UWB (Ultra-Wideband)
Sources
iPhone DuoNo source recorded
Not verified
Yes
PC Sync.
Sources
iPhone DuoNo source recorded
Not verified
Smart Switch (PC version)
OS
Sources
iPhone DuoNo source recorded
Not verified
Android
Sensors
Sources
iPhone DuoNo source recorded
Not verified
Accelerometer, Barometer, Fingerprint Sensor, Gyro Sensor, Geomagnetic Sensor, Hall Sensor, Light Sensor, Proximity Sensor
Removable
Sources
iPhone DuoNo source recorded
Not verified
No
Energy Efficiency Class
Sources
iPhone DuoNo source recorded
Not verified
B
Video Playing Resolution
Sources
iPhone DuoNo source recorded
Not verified
UHD 8K (7680 x 4320)@60fps
Mobile TV
Sources
iPhone DuoNo source recorded
Not verified
No
Cover glass
Sources
iPhone DuoNo source recorded
Galaxy S25 UltraSamsung UK Galaxy S25 Ultra product page
Not verified
Corning Gorilla Armor 2 (front)Samsung states Gorilla Armor 2 on the front and does not name the rear glass. Titanium applies to the frame only. No drop-proof guarantee is claimed.
Show unverified (10)Not verified or conflicting for both phones. Kept for completeness; never counted as a difference.
Published peak brightnessManufacturer peak claims use different test conditions.
Not verifiedNot verified for this exact model.
Not verifiedNot verified for this exact model.
Pixel density
Not verifiedNot verified for this exact model.
Not verifiedNot verified for this exact model.
Wireless charging
Not verifiedNot verified for this exact model.
Not verifiedNot verified for this exact model.
Published support term
Not verifiedNot verified for this exact model.
Not verifiedNot verified for this exact model.
Promised update duration
Sources
Galaxy S25 UltraNo source recorded
Not verifiedNot listed for this exact UK configuration by the cited manufacturer specifications.
Not verified
Optical-quality zoom
Not verifiedNot verified for this exact model.
Not verifiedNot verified for this exact model.
Reverse wireless charging
Not verifiedNot verified for this exact model.
Not verifiedNot verified for this exact model.
3.5 mm headphone jack
Sources
iPhone DuoNo source recorded
Not verifiedNot verified for this exact model.
Not verifiedSamsung lists USB Type-C under Earjack and does not say whether there is also a separate 3.5 mm jack.
Memory card support
Sources
iPhone DuoNo source recorded
Not verifiedNot verified for this exact model.
Not verifiedSamsung's specification does not state whether a memory card is supported.
Manufacturer UK reference price
Sources
iPhone DuoNo source recorded
Galaxy S25 UltraSamsung UK current phone configurations and part numbers
Not verified
Not verifiedThe manufacturer's UK store did not list a price for this configuration.
Exact variants · Manufacturer specificationsView sources
WHERE EVERY NUMBER COMES FROM
Sources
Good comparisons start with good sources.5 cited sources for this pair. Every number has a story.See the evidence
No category can be scored for both phones, so no score is shown. Manufacturer battery claims can use different test conditions. Verified specifications remain visible even where a category cannot be scored.
How we calculate scoresApple iPhone Duo
2000 GB · checked 19 Oct 2026
Specifications & verification
Weight254 gManufacturer claim · high confidenceApple
WidthNot verified
Not published
ThicknessNot verified
Not published
Display sizeNot verified
Not published
Peak brightnessNot verified
Not published
Claimed video playbackNot verified
Not published
Claimed charging rateNot verified
Not published
Published total supportNot verified
Not published
Wireless chargingNot verified
Not published
Reverse wireless chargingNot verified
Not published
Headphone jackNot verified
Not published
Expandable storageNot verified
Not published
eSIM onlyNot verified
Not published
IP ratingNot verified
Not published
Pixel densityNot verified
Not published
Maximum refresh rateNot verified
Not published
Native telephoto reachNot verified
Not published
Claimed optical-quality reachNot verified
Not published
Rear camera modulesNot verified
Not published
8K recordingNot verified
Not published
Manufacturer list priceNot verified
All sources2
- Apple UK — literal MK2K4QN/A configurationApple · accessed 19 Oct 2026
- Apple UK — iPhone Duo technical specificationsApple · accessed 19 Oct 2026
Samsung Galaxy S25 Ultra
512 GB · checked 28 Sept 2026
Specifications & verification
Weight218 gManufacturer claim · high confidenceSamsung
Width77.6 mmManufacturer claim · high confidenceSamsung
Thickness8.2 mmManufacturer claim · high confidenceSamsung
Display size6.9 inchesManufacturer claim · high confidence
Full-rectangle nominal diagonal; rounded corners reduce viewable area.
SamsungPeak brightnessNot verified
Not published
Claimed video playback31 hoursManufacturer claim · high confidence
Video Playback Time (Hours); manufacturer up-to claim. Protocols differ across brands.
SamsungClaimed charging rateNot verified
Not published
Published total supportNot verified
Not published
Wireless chargingNot verified
Not published
Reverse wireless chargingNot verified
Not published
eSIM onlyNoManufacturer claim · high confidenceSamsung
IP ratingIP68Manufacturer claim · high confidence
Samsung laboratory claim: submersion in up to 1.5 metres of fresh water for up to 30 minutes. Not advised for beach or pool use; resistance is not permanent and may diminish with wear.
SamsungRAM12 GBManufacturer claim · high confidenceSamsung
Pixel densityNot verified
Not published
Maximum refresh rate120 HzManufacturer claim · high confidenceSamsung
Native telephoto reachNot verified
Not published
Claimed optical-quality reachNot verified
Not published
Rear camera modules4Manufacturer claim · high confidenceSamsung
8K recordingYesManufacturer claim · high confidenceSamsung
Manufacturer list priceNot verified
All sources3
- Samsung UK Galaxy S25 Ultra technical specifications — SM-S938BZBGEUBSamsung · accessed 10 Sept 2026
- Samsung UK Galaxy S25 Ultra product pageSamsung · accessed 10 Sept 2026
- Samsung UK current phone configurations and part numbersSamsung · accessed 10 Sept 2026
A CLEARER CHOICE
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The verified differences and their sources, in one link.