Apple
iPhone Duo
7.6″ · 120 Hz
256 GB · Night Sky · UK A3720 · dual eSIM · MK2E4QN/ARelease: 23 Oct 2026Full product profile
Night Sky YOUR PHONE FACE-OFF
Real specs. Clear sources.Exact variants · Checked 26 Sept 2026Apple iPhone Duo vs OPPO A6x
Night Sky
WHO EACH ONE SUITS
Choose the iPhone Duo if…
- you want the higher IP68 water-resistance class (vs IP64) Source: Apple UK iPhone Duo technical specifications (opens in a new tab)
Choose the A6x if…
- you want a lighter phone: 205 g vs 254 g Source: OPPO UK A6x specifications (opens in a new tab)
- you need a physical SIM slot; the other is eSIM-only Source: OPPO UK A6x specifications (opens in a new tab)
OPPO
A6x
6.75″ · LCD · 120 Hz · Qualcomm Snapdragon 685 (4G)
128 GB · 4 GB RAM · Ice Blue · UK CPH2819Full product profile
Ice BlueListed configurations: iPhone Duo 256 GB, A6x 128 GB. Storage is a tier you choose, not a difference between the models; no matching tier is listed for both yet.
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.
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.
iPhone Duo
0.85″ larger diagonal.
Bigger is a preference, not a quality score.
- iPhone Duo
- 7.6″
- A6x
- 6.75″
Relative diagonals · illustrative shape, not actual size
DATA INCOMPLETE
Camera details matter.
Dedicated telephoto reach. No digital or crop zoom.
- iPhone Duo
- No telephoto
- A6x
- Not verified
Lens illustration · not an image-quality test
PER-DISPLAY CLAIMS
Playback on paper.
Up-to claims. Different test methods; no endurance winner.
- iPhone Duo
- 31 hours (inner display) · 44 hours (outer display)
- A6x
- Not verified
Arcs on a shared 0–40 h scale · not mixed-use battery life
WHAT CHANGES BETWEEN THEM?
Full specifications ↓Key differences
16 verified differences, most decision-relevant first. 4 are also drawn in Visual facts above. Missing information stays separate.
Chipset
In Visual factsiPhone DuoApple A20 Pro · 6 CPU cores · 7 GPU cores · dual 16-core Neural Engine
A6xQualcomm Snapdragon 685 (4G)
Sources
A6x
8-core CPU; Adreno 610 GPU at 1260 MHz.
OPPO UK A6x specificationsOPPO UK A6x product page and footnotesDifferent hardware. A chip name or generation does not quantify real-world performance.
Camera system
iPhone DuoMain: 48 MP (f/1.6, OIS), 2x crop mode; Ultra-wide: 48 MP; Front: 12 MP (cover), under-display camera (inner); Video: up to 4K 120 fps
A6xMain: 13 MP (f/2.2, AF); Monochrome: QVGA (f/3.0); Front: 5 MP (f/2.2); Video: up to 1080p 30 fps
Sources
A6x
Rear and front video: 1080p and 720p at 30 fps; video zoom up to 10x digital. No ultra-wide or telephoto camera is listed.
OPPO UK A6x specificationsCompare the camera hardware and recording modes. Matching megapixels or zoom do not mean identical cameras.
Display specification
iPhone DuoMain: 7.6-inch OLED, 2670 × 1878; Cover: 5.4-inch OLED, 2034 × 1398; both up to 120 Hz, 3000 nits peak (outdoor)
A6x6.75-inch LCD; 1570 × 720; up to 120 Hz; 1125 nits (HBM, typical)
Sources
iPhone Duo
Inner 430 ppi, cover 460 ppi; ProMotion adaptive refresh on both displays.
Apple UK iPhone Duo technical specificationsA6x
256 ppi; 90.6% screen ratio; 16.7 million colours (8-bit); Vivid mode 85% DCI-P3, Natural mode 100% sRGB; 800 nits typical normal brightness; touch sampling up to 240 Hz (default 120 Hz).
OPPO UK A6x specificationsCheck the exact configuration and source conditions for your use.
Update policy
iPhone DuoNo fixed update period published; ships with iOS 27.1
A6xSecurity updates until 6 March 2032 (OPPO UK list entry "OPPO A6x")
Sources
iPhone DuoApple announces iPhone Duo
A6x
From OPPO's UK product security update period list. The list separately names an 'OPPO A6x 5G' with a different date; the UK A6x (CPH2819) is the 4G model. No Android version-upgrade count is published. OPPO's '48-Month Fluency Protection' claim applies only to 256 GB or larger models, not this 128 GB configuration.
OPPO UK product security update periodDistinguish Android upgrades from security coverage. A total term from launch is not the support remaining from today or from purchase.
Battery and charging
iPhone DuoUp to 31 h video (44 h on cover screen); fast wired charging (60 W adapter), 25 W wireless
A6x6100 mAh (typical); fast charging not supported
Sources
iPhone Duo
Apple does not publish battery capacity in mAh. Up to 50% in around 20 minutes with a separately sold 60 W-capable or higher USB-C adapter; MagSafe and Qi2 up to 25 W. Apple claims, not independent tests.
Apple UK iPhone Duo technical specificationsA6x
OPPO does not publish a wired charging wattage for the A6x. Reverse wired charging to other devices at up to 5 V/1 A via USB-OTG and a C-to-C cable. The UK box list includes a USB data cable but no charger.
OPPO UK A6x specificationsManufacturer claims for the stated mode and equipment. Read each test condition; this is not measured everyday battery life.
eSIM only
iPhone DuoYes
A6xNo
Sources
Check the exact configuration and source conditions for your use.
Show 10 more verified differences
Form factor
iPhone Duofoldable
A6xslab
Sources
Check the exact configuration and source conditions for your use.
Front cameras
iPhone DuoOuter: 12 MP Center Stage, f/2.2. Inner: under-display FaceTime camera, f/1.8; resolution not published.
A6x5 MP, f/2.2
Sources
Compare the camera hardware and recording modes. Matching megapixels or zoom do not mean identical cameras.
Ingress protection
In Visual factsiPhone DuoIP68
A6xIP64
Sources
iPhone Duo
Apple controlled test: 6 metres for 30 minutes; resistance is not permanent.
Apple UK iPhone Duo technical specificationsCheck the exact configuration and source conditions for your use.
Inner pixel density
iPhone Duo430 ppi
A6x256 ppi
Sources
Check the exact configuration and source conditions for your use.
Inner display size
iPhone Duo7.6 in
A6x6.75 in
Sources
iPhone Duo
Inner display when open; outer display is 5.4 inches.
Apple UK iPhone Duo technical specificationsCheck the exact configuration and source conditions for your use.
Dimensions
iPhone DuoClosed: 117.8 × 84.1 × 11.3 mm; open: 117.8 × 164.6 × 5.2 mm (height × width × thickness)
A6xAbout 166.61 × 78.51 × 8.61 mm (height × width × depth)
Sources
A size or weight trade-off; it does not establish the better product.
Height (foldable measured folded)
iPhone Duo117.8 mm
A6x166.61 mm
Sources
A size or weight trade-off; it does not establish the better product. The foldable's published figure is its folded body. Folded and open dimensions describe different states; check the separately labelled source figures.
Closed thickness (foldable measured folded)
iPhone Duo11.3 mm
A6x8.61 mm
Sources
A size or weight trade-off; it does not establish the better product. The foldable's published figure is its folded body. Folded and open dimensions describe different states; check the separately labelled source figures.
Weight
In Visual factsiPhone Duo254 g
A6x205 g
Sources
A6x
OPPO gives 'about 205 g' and says size and weight may vary by configuration and manufacturing process.
OPPO UK A6x specificationsA size or weight trade-off; it does not establish the better product.
Closed width (foldable measured folded)
In Visual factsiPhone Duo84.1 mm
A6x78.51 mm
Sources
A size or weight trade-off; it does not establish the better product. The foldable's published figure is its folded body. Folded and open dimensions describe different states; check the separately labelled source figures.
Configuration & compatibility details (3)
Storage
iPhone Duo256 GB
A6x128 GB
Sources
iPhone DuoApple UK iPhone Duo, 256 GB, Night Sky
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.
RAM and storage configuration
iPhone DuoRAM not published; 256 GB storage
A6x4 GB LPDDR4X RAM; 128 GB UFS 2.2 storage; microSD supported
Sources
A6x
The only UK capacity listed. RAM Expansion adds virtual RAM from storage and is not counted here.
OPPO UK A6x specificationsA 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.
Regional SIM / network configuration
iPhone DuoUK model A3720; eSIM only
A6xUK model CPH2819; dual SIM (Nano-SIM / Nano-USIM); 4G LTE (no 5G)
Sources
iPhone Duo
Dual eSIM (two active eSIMs); no physical SIM slot; 5G (sub-6 GHz). Carrier eSIM support needs confirming with your network.
Apple UK iPhone Duo technical specificationsA6x
Bands: GSM 850/900/1800/1900 MHz; WCDMA 1/5/8; LTE FDD 1/3/5/7/8/20/28; LTE TDD 38/40/41. No 5G NR bands are listed. OPPO does not operate a US store and this record makes no US availability claim; the band list lacks common US LTE bands 2, 4, 12, 13 and 66.
OPPO UK A6x specificationsThese descriptions or measurements differ. Wording alone does not establish a different capability; check the exact configuration.
Missing or non-comparable evidence (53)
Rear 4K recording maximum
iPhone Duo120 fps
A6xNot verified
Sources
iPhone Duo
100 and 120 fps are Fusion Main only. Manufacturer recording-mode claim; not an independent quality or sustained-recording test.
Apple UK iPhone Duo technical specificationsA6x
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 Duo60 fps
A6xNot verified
Sources
iPhone Duo
Outer 12 MP Center Stage camera. The inner under-display FaceTime camera records up to 1080p at 60 fps.
Apple UK iPhone Duo technical specificationsA6x
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 DuoYes
A6xNot verified
Sources
iPhone Duo
Sensor-shift OIS is stated for the 48 MP Fusion Main (including its 2× mode); the Ultra Wide lists no OIS.
Apple UK iPhone Duo technical specificationsA6x
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Rear camera optical stabilisation
iPhone DuoNot verified
A6xNot 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.
Rear camera autofocus
iPhone DuoNot verified
A6xYes
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 autofocus
iPhone DuoNot verified
A6xNot 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.
Front camera optical stabilisation
iPhone DuoNot verified
A6xNot 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 video playback
iPhone Duo31 hours (inner display) · 44 hours (outer display)
A6xNot verified
Sources
iPhone Duo
Apple UK local-video claim; inner display. The 44-hour outer-display claim is a different mode. Different mode from the 31-hour inner-display claim. Published per display. Neither figure is a like-for-like match for a single-screen phone's claim, so it is not ranked against one.
Apple UK iPhone Duo technical specificationsA6x
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.
UK typical battery capacity
iPhone DuoNot verified
A6x6100 mAh
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.
Wired charging power
iPhone DuoNot verified
A6xNot verified
Sources
iPhone Duo
No source recorded for this side.
A6x
OPPO lists fast charging as unsupported and publishes no charging wattage.
OPPO UK A6x specificationsEvidence is missing or conflicting on at least one side. This is not a verified difference.
Time to 50% wired charge
iPhone Duo20 minutes
A6xNot verified
Sources
iPhone Duo
Apple claim with a separately sold 60W-capable adapter.
Apple UK iPhone Duo technical specificationsA6x
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Declared high-brightness mode
iPhone DuoNot verified
A6x1125 nits
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.
RAM
iPhone DuoNot verified
A6x4 GB
Sources
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Physical RAM type
iPhone DuoNot verified
A6xLPDDR4X
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.
Storage technology
iPhone DuoNot verified
A6xUFS 2.2
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.
Expandable storage
iPhone DuoNot verified
A6xYes
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 connectivity
iPhone DuoWi-Fi 7 · Bluetooth 6 · Thread
A6xNot verified
Sources
A6x
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 DuoNot verified
A6xNot verified
Sources
iPhone Duo
Not verified for this exact model.
No source recorded for this side.
A6x
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.
Launch operating system
iPhone DuoiOS 27.1
A6xNot verified
Sources
iPhone DuoApple announces iPhone Duo
A6x
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Wi-Fi support
iPhone DuoNot verified
A6xWi-Fi 5 (802.11ac)
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
A6x5.0
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.
Connections
iPhone DuoUSB-C · DisplayPort · USB 3 up to 10 Gb/s
A6xNot verified
Sources
A6x
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Stylus support
iPhone DuoApple Pencil (USB-C), announced for later in 2026
A6xNot verified
Sources
iPhone Duo
Apple says support arrives later this year on either display, so it may not be available at launch.
Apple UK iPhone Duo technical specificationsApple announces iPhone DuoA6x
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
UK rated battery capacity
iPhone DuoNot verified
A6x5950 mAh
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.
EU label: minimum battery endurance in cycles
iPhone DuoNot verified
A6x1600 cycles
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.
Biometric authentication
iPhone DuoTouch ID in the side button
A6xNot verified
Sources
A6x
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
UK box contents
iPhone DuoNot verified
A6xPhone, USB data cable, SIM ejector tool, quick guide, safety guide
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 DuoApple C2
A6xNot verified
Sources
iPhone Duo
Listed in the UK Mobile and Wireless section for model A3720.
Apple UK iPhone Duo technical specificationsA6x
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 DuoNot verified
A6x1570 × 720
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 support
iPhone DuoNot verified
A6xNot 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.
Fast charging
iPhone DuoNot verified
A6xNo
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.
Fingerprint sensor
iPhone DuoNot verified
A6xSide-mounted
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.
Headphone jack
iPhone DuoNot verified
A6xYes
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.
Native telephoto reach
iPhone Duo0×
A6xNot verified
Sources
iPhone Duo
No dedicated telephoto module; the 2× mode is a crop.
Apple UK iPhone Duo technical specificationsA6x
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.
NFC
iPhone DuoNot verified
A6xYes
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.
Open thickness
iPhone Duo5.2 mm
A6xNot verified
Sources
A6x
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Open width
iPhone Duo164.6 mm
A6xNot verified
Sources
A6x
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Published operating system
iPhone DuoNot verified
A6xColorOS 15.0
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.
Optical-quality zoom
iPhone Duo2×
A6xNot verified
Sources
iPhone Duo
Manufacturer crop-mode claim; not a separate lens.
Apple UK iPhone Duo technical specificationsA6x
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.
Outer display
iPhone Duo5.4-inch OLED · 1398 × 2034 · 460 ppi · up to 120 Hz
A6xNot verified
Sources
A6x
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
A6xLCD
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 Duo3000 nits
A6xNot verified
Sources
iPhone Duo
Manufacturer claim, not an independent measurement.
Apple UK iPhone Duo technical specificationsA6x
OPPO publishes no separate peak figure: 800 nits typical and 1125 nits typical in high-brightness mode (HBM).
OPPO UK A6x specificationsEvidence is missing or conflicting on at least one side. This is not a verified difference.
Pixel density
iPhone DuoNot verified
A6x256 ppi
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 professional camera workflows
iPhone Duo0
A6xNot verified
Sources
iPhone Duo
The existing capability model counts RAW stills, professional codecs, log capture and external production tools. Apple does not list these four workflows in the complete Duo photo/video specifications.
Apple UK iPhone Duo technical specificationsA6x
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
A6xNot verified
Sources
iPhone Duo
Not verified for this exact model.
No source recorded for this side.
A6x
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 security update end date
iPhone DuoNot verified
A6x2032-03-06
Sources
iPhone Duo
No source recorded for this side.
A6x
OPPO UK security period list; the pledge is a minimum of three years from launch. Not a promise of monthly patches or Android version upgrades.
OPPO UK product security update periodEvidence is missing or conflicting on at least one side. This is not a verified difference.
Claimed streamed video
iPhone Duo26 hours (inner display)
A6xNot verified
Sources
iPhone Duo
Inner display. Published per display. Neither figure is a like-for-like match for a single-screen phone's claim, so it is not ranked against one.
Apple UK iPhone Duo technical specificationsA6x
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Typical use
iPhone Duo24 hours
A6xNot verified
Sources
iPhone Duo
Apple typical-use claim based on equal use of the inner and outer displays; distinct from video playback and not a cross-brand endurance test.
Apple UK iPhone Duo technical specificationsA6x
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
US specification difference
iPhone DuoUS model A3447 is also eSIM only (dual eSIM) and adds 5G mmWave (bands n258, n260, n261); its video-playback claims match the UK model.
A6xNot verified
Sources
A6x
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
8K video recording
iPhone DuoNot verified
A6xNot verified
Sources
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Reverse wired charging
iPhone DuoNot verified
A6x5 W
Sources
iPhone Duo
No source recorded for this side.
A6x
5 V/1 A maximum; requires USB-OTG enabled and a C-to-C cable.
OPPO UK A6x product page and footnotesEvidence is missing or conflicting on at least one side. This is not a verified difference.
Wireless charging
iPhone DuoYes
A6xNot verified
Sources
Evidence is missing or conflicting on at least one side. This is not a verified difference.
MagSafe / Qi2 charging
iPhone Duo25 W
A6xNot verified
Sources
A6x
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
2 shared fields have the same recorded value.
COMPARE THE DETAILS
Full specifications
All specs79 specificationsiPhone DuoA6x
iPhone DuoA6xWeightDiffers
Sources
254g
205g
OPPO gives 'about 205 g' and says size and weight may vary by configuration and manufacturing process.
WidthDiffers
Sources
84.1mm
Closed width
78.51mm
ThicknessDiffers
Sources
11.3mm
Closed thickness
8.61mm
DimensionsDiffers
Sources
Closed: 117.8 × 84.1 × 11.3 mm; open: 117.8 × 164.6 × 5.2 mm (height × width × thickness)
About 166.61 × 78.51 × 8.61 mm (height × width × depth)
HeightDiffers
Sources
117.8 mm
166.61 mm
Form factorDiffers
Sources
foldable
slabSingle-screen bar phone.
ColourDiffers
Sources
Night Sky
Ice Blue
Open width
Sources
A6xNo source recorded
164.6 mm
Not verified
Open thickness
Sources
A6xNo source recorded
5.2 mm
Not verified
Screen sizeDiffers
Sources
7.6″
Inner display size · Inner display when open; outer display is 5.4 inches.
6.75″
Published peak brightnessManufacturer peak claims use different test conditions.
Sources
3000 nitsPublished outdoor peak · Manufacturer claim, not an independent measurement.
Not verifiedClaimed peak brightness · OPPO publishes no separate peak figure: 800 nits typical and 1125 nits typical in high-brightness mode (HBM).
Pixel densityDiffers
Sources
430 ppi
Inner pixel density
256 ppi
Maximum refresh rate
Sources
120Hz
Adaptive ProMotion; refresh depends on content.
120Hz
Display specificationDiffers
Sources
Main: 7.6-inch OLED, 2670 × 1878; Cover: 5.4-inch OLED, 2034 × 1398; both up to 120 Hz, 3000 nits peak (outdoor)Inner 430 ppi, cover 460 ppi; ProMotion adaptive refresh on both displays.
6.75-inch LCD; 1570 × 720; up to 120 Hz; 1125 nits (HBM, typical)256 ppi; 90.6% screen ratio; 16.7 million colours (8-bit); Vivid mode 85% DCI-P3, Natural mode 100% sRGB; 800 nits typical normal brightness; touch sampling up to 240 Hz (default 120 Hz).
Outer display
Sources
A6xNo source recorded
5.4-inch OLED · 1398 × 2034 · 460 ppi · up to 120 Hz
Not verified
Display resolution
Sources
iPhone DuoNo source recorded
Not verified
1570 × 720
Declared high-brightness mode
Sources
iPhone DuoNo source recorded
Not verified
1125 nitsTypical HBM value from OPPO Labs.
Native telephoto reach
Sources
A6xNo source recorded
No dedicated lensNo dedicated telephoto module; the 2× mode is a crop.
Not verifiedNot verified for this exact model.
Rear camera modules
Sources
2
2
Counts the two rear camera modules OPPO lists, including the QVGA monochrome module; the flash is not counted.
Camera systemDiffers
Sources
Main: 48 MP (f/1.6, OIS), 2x crop mode; Ultra-wide: 48 MP; Front: 12 MP (cover), under-display camera (inner); Video: up to 4K 120 fps
Main: 13 MP (f/2.2, AF); Monochrome: QVGA (f/3.0); Front: 5 MP (f/2.2); Video: up to 1080p 30 fpsRear and front video: 1080p and 720p at 30 fps; video zoom up to 10x digital. No ultra-wide or telephoto camera is listed.
Optical-quality zoom
Sources
A6xNo source recorded
2×Manufacturer crop-mode claim; not a separate lens.
Not verifiedNot verified for this exact model.
Front cameraDiffers
Sources
Outer: 12 MP Center Stage, f/2.2. Inner: under-display FaceTime camera, f/1.8; resolution not published.
5 MP, f/2.2
Published professional camera workflows
Sources
A6xNo source recorded
0The existing capability model counts RAW stills, professional codecs, log capture and external production tools. Apple does not list these four workflows in the complete Duo photo/video specifications.
Not verified
Main camera optical stabilisation
Sources
A6xNo source recorded
YesSensor-shift OIS is stated for the 48 MP Fusion Main (including its 2× mode); the Ultra Wide lists no OIS.
Not verified
Rear 4K recording maximum
Sources
A6xNo source recorded
120 fps100 and 120 fps are Fusion Main only. Manufacturer recording-mode claim; not an independent quality or sustained-recording test.
Not verified
Front 4K recording maximum
Sources
A6xNo source recorded
60 fpsOuter 12 MP Center Stage camera. The inner under-display FaceTime camera records up to 1080p at 60 fps.
Not verified
Rear camera autofocus
Sources
iPhone DuoNo source recorded
Not verified
YesAF is listed for the main camera only.
Claimed video playbackUp-to manufacturer claims. Playback protocols differ.
Sources
A6xNo source recorded
31 hours (inner display) · 44 hours (outer display)Apple UK local-video claim; inner display. The 44-hour outer-display claim is a different mode. Different mode from the 31-hour inner-display claim. Published per display. Neither figure is a like-for-like match for a single-screen phone's claim, so it is not ranked against one.
Not verifiedNot verified for this exact model.
Wireless charging
Sources
Yes
Not verifiedWireless charging is not mentioned on OPPO's UK pages.
Battery and chargingDiffers
Sources
Up to 31 h video (44 h on cover screen); fast wired charging (60 W adapter), 25 W wirelessApple does not publish battery capacity in mAh. Up to 50% in around 20 minutes with a separately sold 60 W-capable or higher USB-C adapter; MagSafe and Qi2 up to 25 W. Apple claims, not independent tests.
6100 mAh (typical); fast charging not supportedOPPO does not publish a wired charging wattage for the A6x. Reverse wired charging to other devices at up to 5 V/1 A via USB-OTG and a C-to-C cable. The UK box list includes a USB data cable but no charger.
Claimed streamed video
Sources
A6xNo source recorded
26 hours (inner display)Inner display. Published per display. Neither figure is a like-for-like match for a single-screen phone's claim, so it is not ranked against one.
Not verified
Time to 50% wired charge
Sources
A6xNo source recorded
20 minutesApple claim with a separately sold 60W-capable adapter.
Not verified
MagSafe / Qi2 charging
Sources
A6xNo source recorded
25 WCompatible charger and adapter required.
Not verified
Typical use
Sources
A6xNo source recorded
24 hoursApple typical-use claim based on equal use of the inner and outer displays; distinct from video playback and not a cross-brand endurance test.
Not verified
UK typical battery capacity
Sources
iPhone DuoNo source recorded
Not verified
6100 mAhTypical; rated 5950 mAh (23.09 Wh). Not a measured runtime.
UK rated battery capacity
Sources
iPhone DuoNo source recorded
Not verified
5950 mAh
Reverse wired charging
Sources
iPhone DuoNo source recorded
Not verified
5 W5 V/1 A maximum; requires USB-OTG enabled and a C-to-C cable.
EU label: minimum battery endurance in cycles
Sources
iPhone DuoNo source recorded
Not verified
1600 cycles
Update policyDiffers
Sources
No fixed update period published; ships with iOS 27.1
Security updates until 6 March 2032 (OPPO UK list entry "OPPO A6x")From OPPO's UK product security update period list. The list separately names an 'OPPO A6x 5G' with a different date; the UK A6x (CPH2819) is the 4G model. No Android version-upgrade count is published. OPPO's '48-Month Fluency Protection' claim applies only to 256 GB or larger models, not this 128 GB configuration.
Launch operating system
Sources
iPhone DuoApple announces iPhone Duo
A6xNo source recorded
iOS 27.1
Not verified
ChipsetDiffers
Apple A20 Pro · 6 CPU cores · 7 GPU cores · dual 16-core Neural Engine
Qualcomm Snapdragon 685 (4G)8-core CPU; Adreno 610 GPU at 1260 MHz.
RAM and storage configurationConfiguration
Sources
RAM not published; 256 GB storageApple does not publish RAM capacity.
4 GB LPDDR4X RAM; 128 GB UFS 2.2 storage; microSD supportedThe only UK capacity listed. RAM Expansion adds virtual RAM from storage and is not counted here.
Regional SIM / network configurationConfiguration
Sources
UK model A3720; eSIM onlyDual eSIM (two active eSIMs); no physical SIM slot; 5G (sub-6 GHz). Carrier eSIM support needs confirming with your network.
UK model CPH2819; dual SIM (Nano-SIM / Nano-USIM); 4G LTE (no 5G)Bands: GSM 850/900/1800/1900 MHz; WCDMA 1/5/8; LTE FDD 1/3/5/7/8/20/28; LTE TDD 38/40/41. No 5G NR bands are listed. OPPO does not operate a US store and this record makes no US availability claim; the band list lacks common US LTE bands 2, 4, 12, 13 and 66.
StorageConfiguration
Sources
256 GB
128 GB
RAM
Sources
Not verifiedNot published by Apple.
4 GBVirtual RAM expansion is not counted as physical memory.
Ingress protectionDiffers
IP68Apple controlled test: 6 metres for 30 minutes; resistance is not permanent.
IP64
eSIM onlyDiffers
Sources
Yes
No
Connections
Sources
A6xNo source recorded
USB-C · DisplayPort · USB 3 up to 10 Gb/s
Not verified
Wireless connectivity
Sources
A6xNo source recorded
Wi-Fi 7 · Bluetooth 6 · Thread
Not verified
Biometric authentication
Sources
A6xNo source recorded
Touch ID in the side button
Not verified
Pre-orders open
Sources
iPhone DuoApple announces iPhone Duo
A6xNo source recorded
2026-10-16
Not verified
Announced availability
Sources
iPhone DuoApple announces iPhone Duo
A6xNo source recorded
2026-10-23
Not verified
Apple UK reference price
Sources
iPhone DuoApple UK iPhone Duo, 256 GB, Night Sky
A6xNo source recorded
£1,999Announced 256 GB configuration price; not a current retailer offer.
Not verified
US specification difference
Sources
A6xNo source recorded
US model A3447 is also eSIM only (dual eSIM) and adds 5G mmWave (bands n258, n260, n261); its video-playback claims match the UK model.
Not verified
Cellular modem
Sources
A6xNo source recorded
Apple C2Listed in the UK Mobile and Wireless section for model A3720.
Not verified
Stylus support
Sources
A6xNo source recorded
Apple Pencil (USB-C), announced for later in 2026Apple says support arrives later this year on either display, so it may not be available at launch.
Not verified
3.5 mm headphone jack
Sources
iPhone DuoNo source recorded
Not verifiedNot verified for this exact model.
Yes
Memory card support
Sources
iPhone DuoNo source recorded
Not verifiedNot verified for this exact model.
Yes
Published operating system
Sources
iPhone DuoNo source recorded
Not verified
ColorOS 15.0OPPO says operating-system information is for reference only.
Physical RAM type
Sources
iPhone DuoNo source recorded
Not verified
LPDDR4X
Storage technology
Sources
iPhone DuoNo source recorded
Not verified
UFS 2.2
Wi-Fi support
Sources
iPhone DuoNo source recorded
Not verified
Wi-Fi 5 (802.11ac)
Bluetooth version
Sources
iPhone DuoNo source recorded
Not verified
5.0Codecs: SBC, AAC, aptX.
NFC
Sources
iPhone DuoNo source recorded
Not verified
YesOPPO notes NFC support depends on the region.
Fingerprint sensor
Sources
iPhone DuoNo source recorded
Not verified
Side-mounted
UK box contents
Sources
iPhone DuoNo source recorded
Not verified
Phone, USB data cable, SIM ejector tool, quick guide, safety guideNo charger is listed; OPPO notes contents may vary by market.
Published security update end date
Sources
iPhone DuoNo source recorded
Not verified
2032-03-06OPPO UK security period list; the pledge is a minimum of three years from launch. Not a promise of monthly patches or Android version upgrades.
Show unverified (8)Not verified or conflicting for both phones. Kept for completeness; never counted as a difference.
8K video recording
Sources
Not verified8K recording is not mentioned.
Not verifiedVideo is listed only up to 1080p 30 fps.
Published support term
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.
Wired charging power
Sources
iPhone DuoNo source recorded
Not verified
Not verifiedOPPO lists fast charging as unsupported and publishes no charging wattage.
Rear camera optical stabilisation
Sources
iPhone DuoNo source recorded
Not verified
Not verifiedOPPO does not mention optical stabilisation for any camera.
Front camera autofocus
Sources
iPhone DuoNo source recorded
Not verified
Not verifiedNot stated for the front camera.
Front camera optical stabilisation
Sources
iPhone DuoNo source recorded
Not verified
Not verifiedNot stated for the front camera.
eSIM support
Sources
iPhone DuoNo source recorded
Not verified
Not verifiedOPPO lists Nano-SIM and Nano-USIM cards and does not mention eSIM.
Exact variants · Manufacturer specificationsView sources
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Good comparisons start with good sources.7 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
256 GB · checked 28 Sept 2026
Specifications & verification
Weight254 gManufacturer claim · high confidenceApple
Display size7.6 inchesManufacturer claim · high confidence
Inner display when open; outer display is 5.4 inches.
ApplePeak brightness3,000 nitsManufacturer claim · high confidence
Manufacturer claim, not an independent measurement.
AppleClaimed video playback31 hoursManufacturer claim · high confidence
Apple UK local-video claim; inner display. The 44-hour outer-display claim is a different mode.
AppleClaimed charging rate2.5% per minuteCalculated from sources · low confidence
Apple claim with a separately sold 60W-capable adapter. 50 divided by 20 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 controlled test: 6 metres for 30 minutes; resistance is not permanent.
ApplePixel density430 ppiManufacturer claim · high confidenceApple
Maximum refresh rate120 HzManufacturer claim · high confidence
Adaptive ProMotion; refresh depends on content.
AppleNative telephoto reach0×Manufacturer claim · high confidence
No dedicated telephoto module; the 2× mode is a crop.
AppleClaimed optical-quality reach2×Manufacturer claim · high confidence
Manufacturer crop-mode claim; not a separate lens.
AppleRear camera modules2Manufacturer claim · high confidenceApple
Manufacturer list price£1,999.00Reference only · not a live offer or current priceApple
All sources4
- Apple UK iPhone Duo technical specificationsApple · accessed 9 Sept 2026
- Apple US iPhone Duo technical specificationsApple · accessed 9 Sept 2026
- Apple UK iPhone Duo, 256 GB, Night SkyApple · accessed 9 Sept 2026
- Apple announces iPhone DuoApple · accessed 9 Sept 2026
OPPO A6x
128 GB · checked 26 Sept 2026
Specifications & verification
Weight205 gManufacturer claim · high confidence
OPPO gives 'about 205 g' and says size and weight may vary by configuration and manufacturing process.
OPPOWidth78.51 mmManufacturer claim · high confidenceOPPO
Thickness8.61 mmManufacturer claim · high confidenceOPPO
Display size6.75 inchesManufacturer claim · high confidenceOPPO
Claimed video playbackNot verified
Not published
Claimed charging rateNot verified
Not published
Published total supportNot verified
Not published
Reverse wireless chargingNot verified
Not published
Headphone jackYesManufacturer claim · high confidenceOPPO
Expandable storageYesManufacturer claim · high confidenceOPPO
eSIM onlyNoManufacturer claim · high confidenceOPPO
RAM4 GBManufacturer claim · high confidence
Virtual RAM expansion is not counted as physical memory.
OPPOPixel density256 ppiManufacturer claim · high confidenceOPPO
Maximum refresh rate120 HzManufacturer claim · high confidenceOPPO
Native telephoto reachNot verified
Not published
Claimed optical-quality reachNot verified
Not published
Rear camera modules2Calculated from sources · medium confidence
Counts the two rear camera modules OPPO lists, including the QVGA monochrome module; the flash is not counted.
OPPOManufacturer list priceNot verified
All sources3
- OPPO UK A6x specificationsOPPO · accessed 26 Sept 2026
- OPPO UK A6x product page and footnotesOPPO · accessed 26 Sept 2026
- OPPO UK product security update periodOPPO · accessed 26 Sept 2026
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