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Device A

iPhone Duo

Apple · Phones

Brand Model Open full profile →

Device B

iPhone 18 Pro Max

Apple · Phones

Brand Model Open full profile →

Complete comparison

Full specifications

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Differences only

LAUNCH DATE3 fields

Specification	iPhone Duo	iPhone 18 Pro Max
Announced	9 September 2026	9 September 2026
Released	2026-10-23	18 September 2026
Status	Announced	Available

NETWORK6 fields

Specification	iPhone Duo	iPhone 18 Pro Max
2G Bands	GSM 850 / 900 / 1800 / 1900	GSM 850 / 900 / 1800 / 1900
3G Bands	HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100	HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G LTE	1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 18, 19, 20, 25, 26, 28, 29, 30, 32, 34, 38, 39, 40, 41, 42, 48, 53, 66, 71, 106 - A3447, A3719; 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 30, 32, 34, 38, 39, 40, 41, 42, 48, 53, 66, 106 - A3720; 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 30, 32, 34, 38, 39, 40, 41, 42, 48, 66, 106 - A3721	1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 30, 32, 34, 38, 39, 40, 41, 42, 48, 53, 66, 106 - A3717 \| 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 18, 19, 20, 25, 26, 28, 29, 30, 32, 34, 38, 39, 40, 41, 42, 48, 53, 66, 71 - A3473 \| 1, 2, 3, 4, 5, 7, 8, 11, 12, 13, 14, 17, 18, 19, 20, 21, 25, 26, 28, 29, 30, 32, 34, 38, 39, 40, 41, 42, 48, 53, 66, 71, 106 - A3716 \| 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 30, 32, 34, 38, 39, 40, 41, 42, 48, 66, 106 - A3718
5G	SA/NSA/Sub6/mmWave	1, 2, 3, 5, 7, 8, 12, 20, 25, 26, 28, 30, 38, 40, 41, 48, 53, 66, 70, 75, 77, 78, 79 SA/NSA/Sub6 - A3717 \| 1, 2, 3, 5, 7, 8, 12, 14, 20, 25, 26, 28, 29, 30, 38, 40, 41, 48, 53, 66, 70, 71, 75, 77, 78, 79, 258, 260, 261 SA/NSA/Sub6/mmWave - A3473 \| 1, 2, 3, 5, 7, 8, 12, 14, 20, 25, 26, 28, 29, 30, 38, 40, 41, 48, 53, 66, 70, 71, 75, 77, 78, 79 SA/NSA/Sub6 - A3716 \| 1, 2, 3, 5, 7, 8, 12, 20, 25, 26, 28, 30, 38, 40, 41, 48, 66, 70, 75, 77, 78, 79 SA/NSA/Sub6 - A3718
Speed	HSPA, LTE, 5G	HSPA, LTE, 5G
Technology	5G/4G/LTE/GSM	GSM / HSPA / LTE / 5G

BODY5 fields

Specification	iPhone Duo	iPhone 18 Pro Max
Build	Titanium folding body; Ceramic Shield back	Glass front (Ceramic Shield 2), aluminum frame, aluminum back/ glass back (Ceramic Shield)
Dimensions	Unfolded: 117.8 x 164.6 x 5.2 mm; Folded: 117.8 x 84.1 x 11.3 mm	163.4 x 78 x 8.8 mm (6.43 x 3.07 x 0.35 in)
IP Rating	IP68; 6 m for 30 minutes	IP68; 6 m for 30 minutes
SIM	Dual eSIM (US model)	· Nano-SIM + eSIM + eSIM (max 2 at a time; International) \| · eSIM + eSIM (8 or more, max 2 at a time; USA) \| · Nano-SIM + Nano-SIM + eSIM + eSIM (max 2 at a time; China)
Weight	254 g	249 g

DISPLAY9 fields

Specification	iPhone Duo	iPhone 18 Pro Max
Brightness	1000 nits typical; 1600 HDR; 3000 outdoor peak	1000 nits typical; 1600 HDR; 3000 outdoor peak
Color	P3	P3
Features	Always-on; HDR; True Tone	Always-on; HDR; True Tone; Anti-reflective coating
Protection	Ceramic Shield 2 front	Ceramic Shield 2, Mohs level 5
Refresh Rate	Adaptive, up to 120Hz	Adaptive, up to 120Hz
Resolution	Inner: 1878 × 2670; outer: 1398 × 2034 pixels	1320 x 2868 pixels, 19.5:9 ratio (~460 ppi density)
Screen-to-body	~90.9%	~90.7%
Size	Inner: 7.6 inches; outer: 5.4 inches	6.9 inches, 115.6 cm 2 (~90.7% screen-to-body ratio)
Type	OLED, Super Retina XDR	LTPO Super Retina XDR OLED, 120Hz, HDR10, Dolby Vision, 1000 nits (typ), 1600 nits (HBM), 3000 nits (peak)

PLATFORM5 fields

Specification	iPhone Duo	iPhone 18 Pro Max
CPU	6 cores: 2 performance + 4 efficiency	6 cores: 2 performance + 4 efficiency
Chipset	Apple A20 Pro	Apple A20 Pro (2 nm)
GPU	7 cores	Apple GPU (7-core graphics)
Neural engine	Dual 16-core	Dual 16-core
OS	iOS 27	iOS 27

MEMORY5 fields

Specification	iPhone Duo	iPhone 18 Pro Max
Card slot	No	No
Internal	256GB / 512GB / 1TB / 2TB	256GB / 512GB / 1TB / 2TB
RAM	12GB RAM	12GB
Storage Type	—	NVMe
Storage/RAM variants	256GB, 512GB, 1TB; 12GB RAM	256GB 12GB RAM, 512GB 12GB RAM, 1TB 12GB RAM, 2TB 12GB RAM

MAIN CAMERA3 fields

Specification	iPhone Duo	iPhone 18 Pro Max
Features	Dual-LED dual-tone flash, HDR, panorama	Sensor-shift OIS; macro; ProRAW; Dual-LED dual-tone flash, HDR (photo/panorama), Cinematic from regular video
MAIN CAMERA	48MP f/1.6 main with sensor-shift OIS + 48MP f/2.2 ultrawide	48 MP, f/1.48–f/4.0, 24mm (wide), 1/1.28", 1.22µm, dual pixel PDAF, sensor-shift OIS (gen2) \| 48 MP, f/2.8, 100mm (periscope telephoto), 1/2.55", 0.7µm, PDAF, 3D sensor‑shift OIS, 4x optical zoom \| 48 MP, f/2.2, 13mm, 120˚ (ultrawide), 1/2.55", 0.7µm, PDAF \| TOF 3D LiDAR scanner (depth)
Video	4K Dolby Vision up to 120fps (main)	4K Dolby Vision up to 120fps (main); external ProRes 4K/120fps; 4K@24/25/30/60/100/120fps, 1080p@25/30/60/120/240fps, 10-bit HDR, Dolby Vision HDR (up to 120fps), ProRes, ProRes RAW (up to 120fps), Apple Log 2, 3D (spatial) video/audio, stereo sound rec.

SELFIE CAMERA3 fields

Specification	iPhone Duo	iPhone 18 Pro Max
Features	HDR	HDR, Dolby Vision HDR, 3D (spatial) audio, stereo sound rec., ProRes RAW, Apple Log 2
Selfie camera	Outer: 12MP f/2.2; inner: under-display f/1.8	18 MP multi-aspect, f/1.9, 20mm (ultrawide), PDAF \| SL 3D, (depth/biometrics sensor)
Video	Outer: 4K/60fps; inner: 1080p/60fps	4K Dolby Vision up to 60fps; 4K@24/25/30/60fps, 1080p@25/30/60/120fps, gyro-EIS

SOUND2 fields

Specification	iPhone Duo	iPhone 18 Pro Max
3.5mm jack	No	No
Loudspeaker	Stereo	Yes, with stereo speakers

COMMUNICATION6 fields

Specification	iPhone Duo	iPhone 18 Pro Max
Bluetooth	6	6.0, A2DP, LE
NFC	Yes	Yes
Positioning	GPS, GLONASS, Galileo, QZSS, BeiDou, NavIC	GPS (L1+L5), GLONASS, GALILEO, BDS, QZSS, NavIC
Radio	No	No
USB	USB-C, USB 3 (10Gb/s), DisplayPort	USB Type-C 3.2 Gen 2, DisplayPort
WLAN	Wi-Fi 7	Wi-Fi 802.11 a/b/g/n/ac/6e/7, tri-band, hotspot

FEATURES2 fields

Specification	iPhone Duo	iPhone 18 Pro Max
Other features	—	Ultra Wideband (UWB) support (gen2 chip) \| Emergency SOS, Messages and Find My via satellite
Sensors	Fingerprint, barometer, gyroscope, accelerometer, proximity, four ambient light sensors	LiDAR, barometer, gyroscope, accelerometer, proximity, dual ambient light; Face ID, accelerometer, gyro, proximity, compass, barometer

BATTERY3 fields

Specification	iPhone Duo	iPhone 18 Pro Max
Capacity	5400 mAh	Market-dependent versions: \| · Li-Ion 5391 mAh - Nano SIM model \| · Li-Ion 5567 mAh - eSIM only model
Charging Type	Wired, PD3.2, 50% in ~20 min (60W+ adapter); 25W MagSafe/Qi2 wireless	Wired, PD3.2, AVS, 50% in 15 min \| 25W wireless MagSafe/Qi2, 50% in 30 min (15W - China) \| 4.5W reverse wired
Type	Dual rechargeable lithium-ion batteries	Market-dependent versions: \| · Li-Ion 5391 mAh - Nano SIM model \| · Li-Ion 5567 mAh - eSIM only model

ADDITIONAL INFORMATION7 fields

Specification	iPhone Duo	iPhone 18 Pro Max
Colors	Night Sky; Star White	Black; Silver; Glacier; Burgundy
Compatibility	US model: dual eSIM; no physical SIM slot. Carrier eSIM support required.	Regional variants are listed separately. US A3473 is eSIM-only and requires carrier eSIM support; physical SIM support, battery capacity and network bands vary by model and market.
Cooling	Vapor chamber cooling	Redesigned vapor chamber; three times the surface area of the previous generation
Environmental	35% recycled content by mass; fiber-based packaging (Apple)	40% recycled content by mass; fiber-based packaging (Apple)
Models	A3447 (US)	A3717, A3473, A3716, A3718
Models and regions	—	A3717 (International); A3473 (USA); A3716 (Middle East, Canada, Mexico); A3718 (China)
Price in Nigeria	₦3,900,000	₦3,135,786 – ₦4,584,186

TESTS1 field

Specification	iPhone Duo	iPhone 18 Pro Max
Battery Endurance	Video playback: up to 44 h on outer display or 31 h on inner display (Apple manufacturer test)	Video playback: up to 45 h; streaming: up to 40 h (Apple manufacturer test)

SECURITY3 fields

Specification	iPhone Duo	iPhone 18 Pro Max
Anti-theft	Find My with Activation Lock when enabled	Find My with Activation Lock when enabled
Data Protection	Secure Enclave protects cryptographic keys; device passcode protection	Secure Enclave protects cryptographic keys; device passcode protection
Security	Touch ID fingerprint reader in the side button	Face ID with TrueDepth facial recognition

EU LABEL4 fields

Specification	iPhone Duo	iPhone 18 Pro Max
Battery	—	62:00h endurance, 1000 cycles
Energy	—	Class A
Free fall	—	Class B (180 falls)
Repairability	—	Class C