Apple256 GB
iPhone Air
6.5″ · OLED · 120 Hz · Apple A19 Pro · 6 CPU cores · 5 GPU cores · 16-core Neural Engine
256 GB · Space Black · UK A3517 · dual eSIM · MG2L4QN/AFull product profile
Space Black YOUR PHONE FACE-OFF
Real specs. Clear sources.Exact variants · Checked 28 Sept 2026Apple iPhone Air vs Apple iPhone Duo
Space Black
DIFFERENCES AT A GLANCE
- Form factor
- iPhone Air: slab vs iPhone Duo: foldable
- Weight
- iPhone Air: 165 g vs iPhone Duo: 254 g
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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.
SPECIFICATIONS SIDE BY SIDE6 topics
SELECTED TOPIC
01 / 06
Chipset
A different chip or core configuration is a hardware change, not a measured performance uplift.
DATA INCOMPLETE
Find your screen size.
Bigger is a preference, not a quality score.
- iPhone Air
- 6.5″
- iPhone Duo
- Not verified
Relative diagonals · illustrative shape, not actual size
DATA INCOMPLETE
Camera details matter.
Dedicated telephoto reach. No digital or crop zoom.
- iPhone Air
- No telephoto
- iPhone Duo
- Not verified
Lens illustration · not an image-quality test
DATA INCOMPLETE
Playback on paper.
Up-to claims. Different test methods; no endurance winner.
- iPhone Air
- Up to 27h
- iPhone Duo
- Not verified
Arcs on a shared 0–40 h scale · not mixed-use battery life
WHAT CHANGES BETWEEN THEM?
Full specifications ↓Key differences
11 verified differences, most decision-relevant first. 2 are also drawn in Visual facts above. Missing information stays separate.
Chipset
In Visual factsiPhone AirApple A19 Pro · 6 CPU cores · 5 GPU cores · 16-core Neural Engine
iPhone 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
Sources
Different hardware. A chip name or generation does not quantify real-world performance.
Update policy
iPhone AirNo fixed update period published; ships with iOS 26
iPhone DuoNo fixed update duration is listed in this manufacturer technical source.
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 specificationsDistinguish Android upgrades from security coverage. A total term from launch is not the support remaining from today or from purchase.
Listed operating system
iPhone AiriOS 26
iPhone DuoiOS 27
Sources
Launch software and update commitments differ. A newer launch version does not establish an exclusive feature.
USB connection
iPhone AirUSB-C; USB 2 data up to 480 Mb/s
iPhone DuoUSB-C connector with support for: Charging DisplayPort USB 3 (up to 10Gb/s)
Sources
Check the exact configuration and source conditions for your use.
Form factor
iPhone Airslab
iPhone Duofoldable
Sources
Check the exact configuration and source conditions for your use.
Dimensions
iPhone Air156.2 × 74.7 × 5.64 mm (height × width × thickness)
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
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.
Show 5 more verified differences
Weight
In Visual factsiPhone Air165 g
iPhone Duo254 g
Sources
A size or weight trade-off; it does not establish the better product.
Camera system
iPhone AirMain: 48 MP (f/1.6, OIS), 2x crop mode; Front: 18 MP; Video: up to 4K 60 fps
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
Sources
Compare the camera hardware and recording modes. Matching megapixels or zoom do not mean identical cameras.
Display specification
iPhone Air6.5-inch OLED; 2736 × 1260; up to 120 Hz; 3000 nits peak (outdoor)
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).
Sources
iPhone Air
460 ppi; ProMotion adaptive refresh; 1,000 nits typical and 1,600 nits HDR peak.
Apple UK iPhone Air technical specificationsCheck the exact configuration and source conditions for your use.
Battery and charging
iPhone AirUp to 27 h video; fast wired charging (20 W+ adapter), 20 W wireless
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)
Sources
iPhone Air
Apple does not publish battery capacity in mAh. Up to 22 h streamed video; up to 50% in 30 minutes with a separately sold 20 W or higher USB-C adapter; MagSafe and Qi2 up to 20 W. Apple claims, not independent tests.
Apple UK iPhone Air technical specificationsiPhone 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 specificationsManufacturer claims for the stated mode and equipment. Read each test condition; this is not measured everyday battery life.
Front camera
iPhone Air18 MP Center Stage · f/1.9 · autofocus
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
Sources
Compare the camera hardware and recording modes. Matching megapixels or zoom do not mean identical cameras.
Configuration & compatibility details (2)
Regional SIM / network configuration
iPhone AirUK model A3517; eSIM only
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
Sources
iPhone Air
Dual eSIM (two active eSIMs); no physical SIM slot; 5G (sub-6 GHz). Carrier eSIM support needs confirming with your network.
Apple UK iPhone Air technical specificationsiPhone 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 specificationsThese descriptions or measurements differ. Wording alone does not establish a different capability; check the exact configuration.
Wireless connectivity
iPhone AirWi-Fi 7 · Bluetooth 6 · Thread · second-generation UWB
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
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 specificationsAn 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 (35)
Rear 4K recording maximum
iPhone Air60 fps
iPhone DuoNot verified
Sources
iPhone Air
Manufacturer recording-mode claim; not an independent quality or sustained-recording test.
Apple UK iPhone Air technical specificationsiPhone Duo
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Front 4K recording maximum
iPhone Air60 fps
iPhone DuoNot verified
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.
Main camera optical stabilisation
iPhone AirYes
iPhone DuoNot verified
Sources
iPhone Air
Sensor-shift OIS is stated for the 48 MP Fusion Main, the only rear camera.
Apple UK iPhone Air technical specificationsiPhone 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 autofocus
iPhone AirYes
iPhone DuoNot verified
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 local video playback
iPhone Air27 hours
iPhone DuoNot verified
Sources
iPhone Air
Apple UK up-to claim, without an external battery; not mixed-use battery life.
Apple UK iPhone Air technical specificationsiPhone 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.
Time to 50% wired charge
iPhone Air30 minutes
iPhone DuoNot verified
Sources
iPhone Air
Apple claim using a separately sold 20W or higher USB-C adapter.
Apple UK iPhone Air technical specificationsiPhone Duo
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Maximum refresh rate
iPhone Air120 Hz
iPhone DuoNot verified
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.
RAM
iPhone AirNot verified
iPhone DuoNot verified
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 AirNot verified
iPhone DuoNot verified
Sources
iPhone Air
Not verified for this exact model.
No source recorded for this side.
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.
Published support term
iPhone AirNot verified
iPhone DuoNot verified
Sources
iPhone Air
Not verified for this exact model.
No source recorded for this side.
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.
Device unlock
iPhone AirFace ID
iPhone DuoNot verified
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.
Cellular modem
iPhone AirApple C1X
iPhone DuoNot verified
Sources
iPhone Air
Listed in the UK Mobile and Wireless section for model A3517.
Apple UK iPhone Air technical specificationsiPhone Duo
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Display resolution
iPhone Air2736 × 1260
iPhone DuoNot verified
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 AirYes
iPhone DuoNot verified
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 AirNot verified
iPhone DuoNot verified
Sources
iPhone Air
Not verified for this exact model.
No source recorded for this side.
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.
Ingress protection
iPhone AirIP68
iPhone DuoNot verified
Sources
iPhone Air
Apple laboratory condition: 6 m for 30 minutes. Resistance is not permanent.
Apple UK iPhone Air technical specificationsiPhone 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.
RAM and storage configuration
iPhone AirRAM not published; 256 GB storage
iPhone Duo256 GB storage; RAM capacity is not listed by the manufacturer.
Sources
One source states less detail or a rounded figure. This is not a verified difference; check the exact configuration.
Dedicated telephoto reach
iPhone Air0×
iPhone DuoNot verified
Sources
iPhone Air
The 2× mode crops the main sensor; there is no dedicated telephoto module.
Apple UK iPhone Air technical specificationsiPhone 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.
Optical-quality crop reach
iPhone Air2×
iPhone DuoNot verified
Sources
iPhone Air
Main-sensor crop mode, not a separate telephoto lens.
Apple UK iPhone Air technical specificationsiPhone 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.
Panel technology
iPhone AirOLED
iPhone DuoNot verified
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 outdoor peak
iPhone Air3000 nits
iPhone DuoNot verified
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.
Pixel density
iPhone Air460 ppi
iPhone DuoNot verified
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.
Published professional camera workflows
iPhone Air0
iPhone DuoNot verified
Sources
iPhone Air
Versus counts four workflow types: RAW stills, professional codecs, log capture and external production tools. Apple lists HEIF/JPEG photos and HEVC/H.264 video, and none of the four workflows.
Apple UK iPhone Air technical specificationsiPhone 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 Air1
iPhone DuoNot verified
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 AirNot verified
iPhone DuoNot verified
Sources
iPhone Air
Not verified for this exact model.
No source recorded for this side.
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.
Screen size
iPhone Air6.5 in
iPhone DuoNot verified
Sources
iPhone Air
Nominal diagonal; actual viewable area is smaller.
Apple UK iPhone Air technical specificationsiPhone 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.
Manufacturer-listed sensors
iPhone AirNot verified
iPhone DuoTouch ID fingerprint sensor Barometer High dynamic range gyro High-g accelerometer Proximity sensor Four ambient light sensors
Sources
iPhone Air
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Claimed streamed video
iPhone Air22 hours
iPhone DuoNot verified
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.
Promised update duration
iPhone AirNot verified
iPhone DuoNot verified
Sources
iPhone Air
No source recorded for this side.
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.
8K video recording
iPhone AirNot verified
iPhone DuoNot verified
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 AirYes
iPhone DuoNot verified
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.
MagSafe / Qi2 power
iPhone Air20 W
iPhone DuoNot verified
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.
Height
iPhone Air156.2 mm
iPhone DuoNot verified
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 Air5.64 mm
iPhone DuoNot verified
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
iPhone Air74.7 mm
iPhone DuoNot verified
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.
1 shared field has the same recorded value.
COMPARE THE DETAILS
Full specifications
All specs51 specificationsiPhone AiriPhone Duo
iPhone AiriPhone DuoWeightDiffers
Sources
165g
254g
Manufacturer device mass
Width
Sources
iPhone DuoNo source recorded
74.7mm
Not verifiedNot verified for this exact model.
Thickness
Sources
iPhone DuoNo source recorded
5.64mm
Not verifiedNot verified for this exact model.
Manufacturer dimensions by physical stateDiffers
Sources
156.2 × 74.7 × 5.64 mm (height × width × thickness)
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.
Height
Sources
iPhone DuoNo source recorded
156.2 mm
Not verified
Manufacturer physical formatDiffers
Sources
slab
foldable
Screen size
Sources
iPhone DuoNo source recorded
6.5″Nominal diagonal; actual viewable area is smaller.
Not verifiedNot verified for this exact model.
Published peak brightnessManufacturer peak claims use different test conditions.
Sources
iPhone DuoNo source recorded
3000 nitsPublished outdoor peak · Outdoor peak claim.
Not verifiedNot verified for this exact model.
Pixel density
Sources
iPhone DuoNo source recorded
460 ppi
Not verifiedNot verified for this exact model.
Maximum refresh rate
Sources
iPhone DuoNo source recorded
120HzAdaptive ProMotion.
Not verifiedNot verified for this exact model.
Manufacturer display specificationDiffers
Sources
6.5-inch OLED; 2736 × 1260; up to 120 Hz; 3000 nits peak (outdoor)460 ppi; ProMotion adaptive refresh; 1,000 nits typical and 1,600 nits HDR peak.
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.
Display resolution
Sources
iPhone DuoNo source recorded
2736 × 1260
Not verified
Native telephoto reach
Sources
iPhone DuoNo source recorded
No dedicated lensDedicated telephoto reach · The 2× mode crops the main sensor; there is no dedicated telephoto module.
Not verifiedNot verified for this exact model.
Rear camera modules
Sources
iPhone DuoNo source recorded
1
Not verifiedNot verified for this exact model.
Rear camera systemDiffers
Sources
Main: 48 MP (f/1.6, OIS), 2x crop mode; Front: 18 MP; Video: up to 4K 60 fps
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
Optical-quality zoom
Sources
iPhone DuoNo source recorded
2×Main-sensor crop mode, not a separate telephoto lens.
Not verifiedNot verified for this exact model.
Front camera specificationDiffers
Sources
18 MP Center Stage · f/1.9 · autofocus
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
Published professional camera workflows
Sources
iPhone DuoNo source recorded
0Versus counts four workflow types: RAW stills, professional codecs, log capture and external production tools. Apple lists HEIF/JPEG photos and HEVC/H.264 video, and none of the four workflows.
Not verified
Main camera optical stabilisation
Sources
iPhone DuoNo source recorded
YesSensor-shift OIS is stated for the 48 MP Fusion Main, the only rear camera.
Not verified
Rear 4K recording maximum
Sources
iPhone DuoNo source recorded
60 fpsManufacturer recording-mode claim; not an independent quality or sustained-recording test.
Not verified
Front 4K recording maximum
Sources
iPhone DuoNo source recorded
60 fpsFront 18 MP Center Stage camera only.
Not verified
Front camera autofocus
Sources
iPhone DuoNo source recorded
Yes
Not verified
Claimed video playbackUp-to manufacturer claims. Playback protocols differ.
Sources
iPhone DuoNo source recorded
27 hoursClaimed local video playback · Apple UK up-to claim, without an external battery; not mixed-use battery life.
Not verifiedNot verified for this exact model.
Wireless charging
Sources
iPhone DuoNo source recorded
Yes
Not verifiedNot verified for this exact model.
Manufacturer battery and charging claimsDiffers
Sources
Up to 27 h video; fast wired charging (20 W+ adapter), 20 W wirelessApple does not publish battery capacity in mAh. Up to 22 h streamed video; up to 50% in 30 minutes with a separately sold 20 W or higher USB-C adapter; MagSafe and Qi2 up to 20 W. Apple claims, not independent tests.
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.
Claimed streamed video
Sources
iPhone DuoNo source recorded
22 hoursApple UK up-to claim.
Not verified
Time to 50% wired charge
Sources
iPhone DuoNo source recorded
30 minutesApple claim using a separately sold 20W or higher USB-C adapter.
Not verified
MagSafe / Qi2 power
Sources
iPhone DuoNo source recorded
20 WCompatible charger and adapter required.
Not verified
Manufacturer update-policy informationDiffers
Sources
No fixed update period published; ships with iOS 26
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.
Manufacturer operating systemDiffers
Sources
iOS 26
iOS 27
Chip and core configurationDiffers
Sources
Apple A19 Pro · 6 CPU cores · 5 GPU cores · 16-core Neural Engine
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
Selected storage; RAM remains unlistedDiffers
RAM not published; 256 GB storageApple does not publish RAM capacity.
256 GB storage; RAM capacity is not listed by the manufacturer.
Exact UK hardware, SIM and cellular specificationConfiguration
Sources
UK model A3517; eSIM onlyDual eSIM (two active eSIMs); no physical SIM slot; 5G (sub-6 GHz). Carrier eSIM support needs confirming with your network.
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.
Panel technology
Sources
iPhone DuoNo source recorded
OLED
Not verified
eSIM only
Sources
iPhone DuoNo source recorded
Yes
Not verifiedNot verified for this exact model.
Ingress protection
Sources
iPhone DuoNo source recorded
IP68Apple laboratory condition: 6 m for 30 minutes. Resistance is not permanent.
Not verifiedNot verified for this exact model.
Connector capabilitiesDiffers
Sources
USB-C; USB 2 data up to 480 Mb/s
USB-C connector with support for: Charging DisplayPort USB 3 (up to 10Gb/s)
UK model wireless capabilitiesConfiguration
Sources
Wi-Fi 7 · Bluetooth 6 · Thread · second-generation UWB
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.
Device unlock
Sources
iPhone DuoNo source recorded
Face ID
Not verified
Apple UK reference price
Sources
iPhone AirApple UK iPhone Air configurations
iPhone DuoNo source recorded
£1,099Apple UK price for the 256 GB model in September 2026; retailer prices may differ.
Not verified
Cellular modem
Sources
iPhone DuoNo source recorded
Apple C1XListed in the UK Mobile and Wireless section for model A3517.
Not verified
Manufacturer-listed sensors
Sources
iPhone AirNo source recorded
Not verified
Touch ID fingerprint sensor Barometer High dynamic range gyro High-g accelerometer Proximity sensor Four ambient light sensors
Show unverified (7)Not verified or conflicting for both phones. Kept for completeness; never counted as a difference.
8K video recording
Sources
iPhone DuoNo source recorded
Not verified8K recording is not mentioned.
Not verified8K recording · Not verified for this exact model.
Published support term
Not verifiedNot verified for this exact model.
Not verifiedNot verified for this exact model.
Physical RAM capacity
Sources
Not verifiedNot stated by the manufacturer.
Not verifiedNot listed for this exact UK configuration by the cited manufacturer specifications.
Reverse wireless charging
Not verifiedNot verified for this exact model.
Not verifiedNot verified for this exact model.
Headphone jack
Not verifiedNot verified for this exact model.
Not verifiedNot verified for this exact model.
Expandable storage
Not verifiedNot verified for this exact model.
Not verifiedNot verified for this exact model.
Promised update duration
Sources
iPhone AirNo source recorded
Not verified
Not verifiedNot listed for this exact UK configuration by the cited manufacturer specifications.
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 Air
256 GB · checked 28 Sept 2026
Specifications & verification
Weight165 gManufacturer claim · high confidenceApple
Width74.7 mmManufacturer claim · high confidenceApple
Thickness5.64 mmManufacturer claim · high confidenceApple
Display size6.5 inchesManufacturer claim · high confidence
Nominal diagonal; actual viewable area is smaller.
AppleClaimed video playback27 hoursManufacturer claim · high confidence
Apple UK up-to claim, without an external battery; not mixed-use battery life.
AppleClaimed charging rate1.67% per minuteCalculated from sources · low confidence
Apple claim using a separately sold 20W or higher USB-C adapter. 50 divided by 30 minutes; not a sustained charging rate.
ApplePublished total supportNot verified
Not published
Wireless chargingYesManufacturer claim · high confidenceApple
Reverse wireless chargingNot verified
Not published
Headphone jackNot verified
Not published
Expandable storageNot verified
Not published
eSIM onlyYesManufacturer claim · high confidenceApple
IP ratingIP68Manufacturer claim · high confidence
Apple laboratory condition: 6 m for 30 minutes. Resistance is not permanent.
ApplePixel density460 ppiManufacturer claim · high confidenceApple
Native telephoto reach0×Manufacturer claim · high confidence
The 2× mode crops the main sensor; there is no dedicated telephoto module.
AppleClaimed optical-quality reach2×Manufacturer claim · high confidence
Main-sensor crop mode, not a separate telephoto lens.
AppleRear camera modules1Manufacturer claim · high confidenceApple
Manufacturer list price£1,099.00Reference only · not a live offer or current priceApple
All sources3
- Apple UK iPhone Air technical specificationsApple · accessed 10 Sept 2026
- Apple UK iPhone Air configurationsApple · accessed 10 Sept 2026
- iPhone Air exact UK configurationApple · accessed 10 Sept 2026
Apple iPhone Duo
256 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 MK2D4QN/A configurationApple · accessed 19 Oct 2026
- Apple UK — iPhone Duo technical specificationsApple · accessed 19 Oct 2026
A CLEARER CHOICE
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The verified differences and their sources, in one link.