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
93%Spec
match
Space Blackmatch
YOUR PHONE FACE-OFF
Real specs. Clear sources.Exact variants · Checked 28 Sept 2026Apple iPhone Air vs Apple iPhone Duo
DIFFERENCES AT A GLANCE
- Chipset
- iPhone Air: Apple A19 Pro · 5 GPU cores vs iPhone Duo: Apple A20 Pro · 7 GPU cores
- Rear 4K recording maximum
- iPhone Air: 60 fps vs iPhone Duo: 120 fps
- Time to 50% wired charge
- iPhone Air: 30 minutes vs iPhone Duo: 20 minutes
- Device unlock
- iPhone Air: Face ID vs iPhone Duo: Touch ID in the side button
Compare the actual changes
Make it personal How are scores calculated?Important features fall outside this scoring model.
See the hardware and feature differences ↓Apple256 GB
iPhone Duo
7.6″ · 120 Hz
256 GB · Night Sky · UK A3720 · dual eSIM · MK2E4QN/ARelease: 23 Oct 2026Full product profile
88%Spec
match
Night Skymatch
As an Amazon Associate I earn from qualifying purchases.
EVERYDAY PRIORITIESMore evidence is needed.
Change what matters An overall lead needs at least 2 scored categories verified on both phones; only display can be compared here. Compare the actual figures below.
Published-spec match · for your selected priorities. Scores compare published capabilities, not lab-tested quality. Camera image quality and independent performance tests are not rated. See scoring
Camera, Battery scoring is unavailable for this pair. Known hardware specs still appear below; default scores use only shared, verified categories.
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; scores cover published capabilities only. 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
1.1″ larger diagonal.
Bigger is a preference, not a quality score.
- iPhone Air
- 6.5″
- iPhone Duo
- 7.6″
Relative diagonals · illustrative shape, not actual size
BOTH PHONES
Matching native reach.
Dedicated telephoto reach. No digital or crop zoom.
- iPhone Air
- No telephoto
- iPhone Duo
- No telephoto
Lens illustration · not an image-quality test
PER-DISPLAY CLAIMS
Playback on paper.
Up-to claims. Different test methods; no endurance winner.
- iPhone Air
- Up to 27h
- iPhone Duo
- 31 hours (inner display) · 44 hours (outer display)
Arcs on a shared 0–40 h scale · not mixed-use battery life
WHAT CHANGES BETWEEN THEM?
Full specifications ↓Key differences
23 verified differences, most decision-relevant first. 4 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 DuoApple A20 Pro · 6 CPU cores · 7 GPU cores · dual 16-core Neural Engine
Sources
Different hardware. A chip name or generation does not quantify real-world performance.
Rear 4K recording maximum
In Visual factsiPhone Air60 fps
iPhone Duo120 fps
Sources
iPhone Air
Manufacturer recording-mode claim; not an independent quality or sustained-recording test.
Apple UK iPhone Air technical specificationsiPhone 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 specificationsKeep rear and front camera capabilities separate. A recording mode, autofocus or stabilisation feature can matter for your use; it does not establish independently tested image quality.
Time to 50% wired charge
iPhone Air30 minutes
iPhone Duo20 minutes
Sources
iPhone Air
Apple claim using a separately sold 20W or higher USB-C adapter.
Apple UK iPhone Air technical specificationsiPhone Duo
Apple claim with a separately sold 60W-capable adapter.
Apple UK iPhone Duo technical specificationsManufacturer claims for the stated mode and equipment. Read each test condition; this is not measured everyday battery life.
Camera system
iPhone AirMain: 48 MP (f/1.6, OIS), 2x crop mode; Front: 18 MP; Video: up to 4K 60 fps
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
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 DuoMain: 7.6-inch OLED, 2670 × 1878; Cover: 5.4-inch OLED, 2034 × 1398; both up to 120 Hz, 3000 nits peak (outdoor)
Sources
iPhone Air
460 ppi; ProMotion adaptive refresh; 1,000 nits typical and 1,600 nits HDR peak.
Apple UK iPhone Air technical specificationsiPhone Duo
Inner 430 ppi, cover 460 ppi; ProMotion adaptive refresh on both displays.
Apple UK iPhone Duo technical specificationsCheck the exact configuration and source conditions for your use.
Wireless connectivity
iPhone AirWi-Fi 7 · Bluetooth 6 · Thread · second-generation UWB
iPhone DuoWi-Fi 7 · Bluetooth 6 · Thread
Sources
Check the exact configuration and source conditions for your use.
Show 17 more verified differences
Update policy
iPhone AirNo fixed update period published; ships with iOS 26
iPhone DuoNo fixed update period published; ships with iOS 27.1
Sources
iPhone DuoApple announces iPhone Duo
Distinguish 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 27.1
Sources
iPhone DuoApple announces iPhone Duo
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 · DisplayPort · USB 3 up to 10 Gb/s
Sources
Check 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 DuoUp to 31 h video (44 h on cover screen); fast wired charging (60 W adapter), 25 W wireless
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
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 specificationsManufacturer claims for the stated mode and equipment. Read each test condition; this is not measured everyday battery life.
Device unlock
iPhone AirFace ID
iPhone DuoTouch ID in the side button
Sources
Check the exact configuration and source conditions for your use.
Cellular modem
iPhone AirApple C1X
iPhone DuoApple C2
Sources
iPhone Air
Listed in the UK Mobile and Wireless section for model A3517.
Apple UK iPhone Air technical specificationsiPhone Duo
Listed in the UK Mobile and Wireless section for model A3720.
Apple UK iPhone Duo technical specificationsCheck 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.
Front camera
iPhone Air18 MP Center Stage · f/1.9 · autofocus
iPhone DuoOuter: 12 MP Center Stage, f/2.2. Inner: under-display FaceTime camera, f/1.8; resolution not published.
Sources
Compare the camera hardware and recording modes. Matching megapixels or zoom do not mean identical cameras.
Pixel density
iPhone Air460 ppi
iPhone Duo430 ppi
Sources
Check the exact configuration and source conditions for your use.
Rear camera modules
iPhone Air1
iPhone Duo2
Sources
Compare the camera hardware and recording modes. Matching megapixels or zoom do not mean identical cameras.
Screen size
iPhone Air6.5 in
iPhone Duo7.6 in
Sources
iPhone Air
Nominal diagonal; actual viewable area is smaller.
Apple UK iPhone Air technical specificationsiPhone 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.
MagSafe / Qi2 power
iPhone Air20 W
iPhone Duo25 W
Sources
Check the exact configuration and source conditions for your use.
Dimensions
iPhone Air156.2 × 74.7 × 5.64 mm (height × width × thickness)
iPhone DuoClosed: 117.8 × 84.1 × 11.3 mm; open: 117.8 × 164.6 × 5.2 mm (height × width × thickness)
Sources
A size or weight trade-off; it does not establish the better product.
Height (foldable measured folded)
iPhone Air156.2 mm
iPhone Duo117.8 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.
Thickness (foldable measured folded)
iPhone Air5.64 mm
iPhone Duo11.3 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 Air165 g
iPhone Duo254 g
Sources
A size or weight trade-off; it does not establish the better product.
Width (foldable measured folded)
In Visual factsiPhone Air74.7 mm
iPhone Duo84.1 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 (1)
Regional SIM / network configuration
iPhone AirUK model A3517; eSIM only
iPhone DuoUK model A3720; eSIM only
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
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 specificationsThese descriptions or measurements differ. Wording alone does not establish a different capability; check the exact configuration.
Missing or non-comparable evidence (17)
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 Duo31 hours (inner display) · 44 hours (outer display)
Sources
iPhone Air
Apple UK up-to claim, without an external battery; not mixed-use battery life.
Apple UK iPhone Air technical specificationsiPhone 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 specificationsThe recorded units or formats differ. These values are not ranked.
RAM
iPhone AirNot verified
iPhone DuoNot verified
Sources
Evidence 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.
Stylus support
iPhone AirNot verified
iPhone DuoApple Pencil (USB-C), announced for later in 2026
Sources
iPhone Air
No source recorded for this side.
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 DuoEvidence 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.
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.
Open thickness
iPhone AirNot verified
iPhone Duo5.2 mm
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.
Open width
iPhone AirNot verified
iPhone Duo164.6 mm
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.
Outer display
iPhone AirNot verified
iPhone Duo5.4-inch OLED · 1398 × 2034 · 460 ppi · up to 120 Hz
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.
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.
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.
Claimed streamed video
iPhone Air22 hours
iPhone Duo26 hours (inner display)
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 specificationsThe recorded units or formats differ. These values are not ranked.
Typical use
iPhone AirNot verified
iPhone Duo24 hours
Sources
iPhone Air
No source recorded for this side.
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 specificationsEvidence is missing or conflicting on at least one side. This is not a verified difference.
US specification difference
iPhone AirNot verified
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.
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.
8K video recording
iPhone AirNot verified
iPhone DuoNot verified
Sources
Evidence is missing or conflicting on at least one side. This is not a verified difference.
12 shared fields have the same recorded value.
WHAT THE SCORE COVERS
Score breakdown
Limited specification indices. Explore the inputs and their limits.
iPhone Air iPhone Duo
Display explainediPhone Air leads
iPhone Air: Published brightness, pixel density and maximum refresh under the existing capability model. This is not a laboratory display rating.
iPhone Duo: Published brightness, pixel density and maximum refresh under the existing capability model. This is not a laboratory display rating.
Explore the sources WHAT MATTERS TO YOU?
Your priorities
Make the comparison fit your life.
Any must-haves?
COMPARE THE DETAILS
Full specifications
All specs58 specificationsiPhone AiriPhone Duo
iPhone AiriPhone DuoWeightDiffers
Sources
165g
254g
WidthDiffers
Sources
74.7mm
84.1mm
Closed width
ThicknessDiffers
Sources
5.64mm
11.3mm
Closed thickness
DimensionsDiffers
Sources
156.2 × 74.7 × 5.64 mm (height × width × thickness)
Closed: 117.8 × 84.1 × 11.3 mm; open: 117.8 × 164.6 × 5.2 mm (height × width × thickness)
HeightDiffers
Sources
156.2 mm
117.8 mm
Form factorDiffers
Sources
slab
foldable
ColourDiffers
Sources
iPhone AirApple UK iPhone Air configurations
iPhone DuoApple UK iPhone Duo, 256 GB, Night Sky
Space Black
Night Sky
Open width
Sources
iPhone AirNo source recorded
Not verified
164.6 mm
Open thickness
Sources
iPhone AirNo source recorded
Not verified
5.2 mm
Screen sizeDiffers
Sources
6.5″
Nominal diagonal; actual viewable area is smaller.
7.6″
Inner display size · Inner display when open; outer display is 5.4 inches.
Published peak brightnessManufacturer peak claims use different test conditions.
Sources
3000 nits
Published outdoor peak · Outdoor peak claim.
3000 nits
Published outdoor peak · Manufacturer claim, not an independent measurement.
Pixel densityDiffers
Sources
460 ppi
430 ppi
Inner pixel density
Maximum refresh rate
Sources
120Hz
Adaptive ProMotion.
120Hz
Adaptive ProMotion; refresh depends on content.
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.
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.
Display resolution
Sources
iPhone DuoNo source recorded
2736 × 1260
Not verified
Outer display
Sources
iPhone AirNo source recorded
Not verified
5.4-inch OLED · 1398 × 2034 · 460 ppi · up to 120 Hz
Native telephoto reach
Sources
No dedicated lensDedicated telephoto reach · The 2× mode crops the main sensor; there is no dedicated telephoto module.
No dedicated lensNo dedicated telephoto module; the 2× mode is a crop.
Rear camera modulesDiffers
Sources
1
2
Camera systemDiffers
Sources
Main: 48 MP (f/1.6, OIS), 2x crop mode; Front: 18 MP; Video: up to 4K 60 fps
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
Optical-quality zoom
Sources
2×Main-sensor crop mode, not a separate telephoto lens.
2×Manufacturer crop-mode claim; not a separate lens.
Front camerasDiffers
Sources
18 MP Center Stage · f/1.9 · autofocus
Outer: 12 MP Center Stage, f/2.2. Inner: under-display FaceTime camera, f/1.8; resolution not published.
Published professional camera workflows
Sources
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.
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.
Main camera optical stabilisation
Sources
YesSensor-shift OIS is stated for the 48 MP Fusion Main, the only rear camera.
YesSensor-shift OIS is stated for the 48 MP Fusion Main (including its 2× mode); the Ultra Wide lists no OIS.
Rear 4K recording maximumDiffers
Sources
60 fpsManufacturer recording-mode claim; not an independent quality or sustained-recording test.
120 fps100 and 120 fps are Fusion Main only. Manufacturer recording-mode claim; not an independent quality or sustained-recording test.
Front 4K recording maximum
Sources
60 fpsFront 18 MP Center Stage camera only.
60 fpsOuter 12 MP Center Stage camera. The inner under-display FaceTime camera records up to 1080p at 60 fps.
Front camera autofocus
Sources
iPhone DuoNo source recorded
Yes
Not verified
Claimed video playbackUp-to manufacturer claims. Playback protocols differ.Differs
Sources
27 hoursClaimed local video playback · Apple UK up-to claim, without an external battery; not mixed-use battery life.
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.
Wireless charging
Sources
Yes
Yes
Battery and chargingDiffers
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.
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.
Claimed streamed videoDiffers
Sources
22 hoursApple UK up-to claim.
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.
Time to 50% wired chargeDiffers
Sources
30 minutesApple claim using a separately sold 20W or higher USB-C adapter.
20 minutesApple claim with a separately sold 60W-capable adapter.
MagSafe / Qi2 chargingDiffers
Sources
20 WCompatible charger and adapter required.
25 WCompatible charger and adapter required.
Typical use
Sources
iPhone AirNo source recorded
Not verified
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.
Update policyDiffers
Sources
iPhone DuoApple announces iPhone Duo
No fixed update period published; ships with iOS 26
No fixed update period published; ships with iOS 27.1
ChipsetDiffers
Sources
Apple A19 Pro · 6 CPU cores · 5 GPU cores · 16-core Neural Engine
Apple A20 Pro · 6 CPU cores · 7 GPU cores · dual 16-core Neural Engine
RAM and storage configuration
Sources
iPhone AirApple UK iPhone Air configurations
iPhone DuoApple UK iPhone Duo, 256 GB, Night Sky
RAM not published; 256 GB storageApple does not publish RAM capacity.
RAM not published; 256 GB storageApple does not publish RAM capacity.
Regional SIM / network configurationConfiguration
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 model A3720; eSIM onlyDual eSIM (two active eSIMs); no physical SIM slot; 5G (sub-6 GHz). Carrier eSIM support needs confirming with your network.
Storage
Sources
iPhone AirApple UK iPhone Air configurations
iPhone DuoApple UK iPhone Duo, 256 GB, Night Sky
256 GB
256 GB
Panel technology
Sources
iPhone DuoNo source recorded
OLED
Not verified
eSIM only
Sources
Yes
Yes
Ingress protection
Sources
IP68Apple laboratory condition: 6 m for 30 minutes. Resistance is not permanent.
IP68Apple controlled test: 6 metres for 30 minutes; resistance is not permanent.
ConnectionsDiffers
Sources
USB-C; USB 2 data up to 480 Mb/s
USB-C · DisplayPort · USB 3 up to 10 Gb/s
Wireless connectivityDiffers
Sources
Wi-Fi 7 · Bluetooth 6 · Thread · second-generation UWB
Wi-Fi 7 · Bluetooth 6 · Thread
Biometric authenticationDiffers
Sources
Face ID
Touch ID in the side button
Apple UK reference priceDiffers
Sources
iPhone AirApple UK iPhone Air configurations
iPhone DuoApple UK iPhone Duo, 256 GB, Night Sky
£1,099Apple UK price for the 256 GB model in September 2026; retailer prices may differ.
£1,999Announced 256 GB configuration price; not a current retailer offer.
Cellular modemDiffers
Sources
Apple C1XListed in the UK Mobile and Wireless section for model A3517.
Apple C2Listed in the UK Mobile and Wireless section for model A3720.
Announced
Sources
iPhone AirNo source recorded
iPhone DuoApple announces iPhone Duo
Not verified
2026-09-09
Pre-orders open
Sources
iPhone AirNo source recorded
iPhone DuoApple announces iPhone Duo
Not verified
2026-10-16
Announced availability
Sources
iPhone AirNo source recorded
iPhone DuoApple announces iPhone Duo
Not verified
2026-10-23
US specification difference
Sources
iPhone AirNo source recorded
Not verified
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.
Stylus support
Sources
iPhone AirNo source recorded
Not verified
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.
Show unverified (6)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 verified8K recording is not mentioned.
Published support term
Not verifiedNot verified for this exact model.
Not verifiedNot verified for this exact model.
RAM
Sources
Not verifiedNot stated by the manufacturer.
Not verifiedNot published by Apple.
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.
Exact variants · Manufacturer specificationsView sources
A LITTLE PERSPECTIVE. A BETTER DECISION.
Make this comparison yours.Decision tools
THE PRICE THAT CHANGES EVERYTHING
What price changes your mind?
A great phone. An even better deal. Find the point where the value flips.
Let’s check the fit first
Your must-haves take priority. Both phones must meet them to compare value.
Review your priorities NO LOGOS. JUST YOU.
Would you choose it blind?
Forget the brand for a moment. Which set of specs feels more like you?
Manufacturer specifications verified for both phones. Your choice doesn’t change the comparison above.
Good comparisons start with good sources.7 cited sources for this pair. Every number has a story.See the evidence
Your selected categories: Display. Scores reflect published capabilities, not hands-on testing. 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
Your weighted score93.0 / 100Selected categories: Display.
(93.00 × 1 + 73.47 × 0) ÷ 1
Display93.0 / 100
Published brightness, pixel density and maximum refresh under the existing capability model. This is not a laboratory display rating.
Selected weight: 1.
medium confidence · 100% model coveragePublished peak brightnessSource value: 3000
100.00 × 40% = 40.00Manufacturer-published peak figure; not an independent measurement.
ApplePixel densitySource value: 460
80.00 × 35% = 28.00Published or explicitly calculated pixel density.
AppleCategory score = 40.00 + 28.00 + 25.00 = 93.00
CameraNot scored
Camera hardware is listed, but all inputs for the camera-capability model have not been verified.
Not included in your current weighted score.
Missing: Complete model-defined camera workflow evidence.
Battery73.5 / 100
Uses the listed playback mode and short charging claim. Manufacturer protocols differ; this is not measured endurance.
Not included in your current weighted score.
low confidence · 100% model coverageManufacturer-claimed local video playbackSource value: 27
77.14 × 65% = 50.14Apple UK up-to claim, without an external battery; not mixed-use battery life.
AppleManufacturer-claimed charging rateSource value: 1.67
66.67 × 35% = 23.33Apple claim using a separately sold 20W or higher USB-C adapter. 50 divided by 30 minutes; not a sustained charging rate.
AppleCategory score = 50.14 + 23.33 = 73.47
PerformanceNot scored
Comparable independent CPU, GPU and sustained-performance measurements are not available here.
Not included in your current weighted score.
Missing: Independent benchmarks.
LongevityNot scored
The published update policy is listed separately; remaining support is not converted into a quality score.
Not included in your current weighted score.
Missing: Comparable remaining-support scoring methodology.
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 28 Sept 2026
Your weighted score87.8 / 100Selected categories: Display.
(87.75 × 1) ÷ 1
Display87.8 / 100
Published brightness, pixel density and maximum refresh under the existing capability model. This is not a laboratory display rating.
Selected weight: 1.
medium confidence · 100% model coveragePublished peak brightnessSource value: 3000
100.00 × 40% = 40.00Manufacturer-published peak figure; not an independent measurement.
ApplePixel densitySource value: 430
65.00 × 35% = 22.75Published or explicitly calculated pixel density.
AppleCategory score = 40.00 + 22.75 + 25.00 = 87.75
CameraNot scored
Camera hardware is listed, but all inputs for the camera-capability model have not been verified.
Not included in your current weighted score.
Missing: Complete model-defined camera workflow evidence.
BatteryNot scored
Video playback is published per display (inner and outer screens), so no single figure is comparable with a single-screen phone's claim.
Not included in your current weighted score.
Missing: A playback claim for the whole phone.
PerformanceNot scored
Comparable independent CPU, GPU and sustained-performance measurements are not available here.
Not included in your current weighted score.
Missing: Independent benchmarks.
LongevityNot scored
The published update policy is listed separately; remaining support is not converted into a quality score.
Not included in your current weighted score.
Missing: Comparable remaining-support scoring methodology.
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
A CLEARER CHOICE
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