Apple
iPhone Duo vs iPhone 18 Pro Max
Device summary
Apple
iPhone 18 Pro Max
Full specifications
| Basic information | ||
|---|---|---|
| Release year | 2026 | 2026 |
| Starting price | $1,999 | $1,299 |
| Display size | 7.6-inch | 6.9-inch |
| Dimensions | 84.1 mm × 117.8 mm × 11.3 mm | 78.0 mm × 163.4 mm × 8.8 mm |
| Weight | 254 g | 249 g |
| Front material | Ceramic Shield 2 | Ceramic Shield 2 |
| Back material | Ceramic Shield | Ceramic Shield |
| Display | ||
| Cover display size | 5.4" | — |
| Display technology | Super Retina XDR OLED | Super Retina XDR OLED |
| Cover display technology | Super Retina XDR OLED | — |
| Resolution | 1878 × 2670 | 2868 × 1320 |
| Cover resolution | 1398 × 2034 | — |
| Refresh rate | 120 Hz | 120 Hz |
| Cover refresh rate | 120 Hz | — |
| Peak brightness | 3000 nits | 3000 nits |
| Protection | Ceramic Shield 2 | Ceramic Shield 2 |
| Performance | ||
| Chipset | Apple A20 Pro | Apple A20 Pro |
| CPU | 6-core CPU with 2 super cores and 4 efficiency cores | 6-core CPU with 2 super cores and 4 efficiency cores |
| GPU | 7-core GPU with Neural Accelerators | 7-core GPU with Neural Accelerators |
| Storage | 256 GB, 512 GB, 1024 GB, 2048 GB | 256 GB, 512 GB, 1024 GB, 2048 GB |
| Expandable storage | No | No |
| Cameras | ||
| Main camera | Fusion Main · 48 MP · ƒ/1.6 · 26 mm · Sensor-shift OIS | Fusion Main · 48 MP · ƒ/1.48–ƒ/4.0 · 24 mm · Second-generation sensor-shift OIS |
| Ultra-wide camera | Fusion Ultra Wide · 48 MP · ƒ/2.2 · 13 mm | Fusion Ultra Wide · 48 MP · ƒ/2.2 · 13 mm |
| Telephoto camera | — | Fusion Telephoto · 48 MP · ƒ/2.8 · 100 mm · 4× optical zoom · 3D sensor-shift OIS |
| Front cameras | Outer Center Stage · 12 MP · ƒ/2.2; Inner under-display FaceTime · ƒ/1.8 | Center Stage · 18 MP · ƒ/1.9 |
| Video recording | 4K Dolby Vision up to 120 fps | 4K Dolby Vision up to 120 fps, ProRes up to 4K at 120 fps |
| Battery & charging | ||
| Wireless charging | 25 W | 25 W |
| Charging standard | USB-C, MagSafe up to 25W, Qi2 up to 25W | USB-C, MagSafe up to 25W, Qi2 up to 25W |
| Video playback (Manufacturer claim) | 31 h | 45 h |
| Streamed video (Manufacturer claim) | — | 40 h |
| Battery type | Dual built-in rechargeable lithium-ion | Built-in rechargeable lithium-ion |
| Connectivity | ||
| Cellular | 5G (sub-6 GHz and mmWave), Gigabit LTE | 5G (sub-6 GHz and mmWave), Gigabit LTE |
| Wi‑Fi | Wi‑Fi 7 (802.11be) | Wi‑Fi 7 (802.11be) |
| Bluetooth | Bluetooth 6 | Bluetooth 6 |
| USB | USB-C (USB 3, up to 10Gb/s) | USB-C (USB 3, up to 10Gb/s) |
| NFC | Yes | Yes |
| eSIM | Yes | Yes |
| Satellite | Emergency SOS via satellite | Emergency SOS via satellite |
| Build & durability | ||
| Frame | Titanium | Aluminum unibody |
| Ingress protection | IP68 | IP68 |
Basic information
Release year
- iPhone Duo
- 2026
- iPhone 18 Pro Max
- 2026
Starting price
- iPhone Duo
- $1,999
- iPhone 18 Pro Max
- $1,299
Display size
- iPhone Duo
- 7.6-inch
- iPhone 18 Pro Max
- 6.9-inch
Dimensions
- iPhone Duo
- 84.1 mm × 117.8 mm × 11.3 mm
- iPhone 18 Pro Max
- 78.0 mm × 163.4 mm × 8.8 mm
Weight
- iPhone Duo
- 254 g
- iPhone 18 Pro Max
- 249 g
Front material
- iPhone Duo
- Ceramic Shield 2
- iPhone 18 Pro Max
- Ceramic Shield 2
Back material
- iPhone Duo
- Ceramic Shield
- iPhone 18 Pro Max
- Ceramic Shield
Display
Cover display size
- iPhone Duo
- 5.4"
- iPhone 18 Pro Max
- —
Display technology
- iPhone Duo
- Super Retina XDR OLED
- iPhone 18 Pro Max
- Super Retina XDR OLED
Cover display technology
- iPhone Duo
- Super Retina XDR OLED
- iPhone 18 Pro Max
- —
Resolution
- iPhone Duo
- 1878 × 2670
- iPhone 18 Pro Max
- 2868 × 1320
Cover resolution
- iPhone Duo
- 1398 × 2034
- iPhone 18 Pro Max
- —
Refresh rate
- iPhone Duo
- 120 Hz
- iPhone 18 Pro Max
- 120 Hz
Cover refresh rate
- iPhone Duo
- 120 Hz
- iPhone 18 Pro Max
- —
Peak brightness
- iPhone Duo
- 3000 nits
- iPhone 18 Pro Max
- 3000 nits
Protection
- iPhone Duo
- Ceramic Shield 2
- iPhone 18 Pro Max
- Ceramic Shield 2
Performance
Chipset
- iPhone Duo
- Apple A20 Pro
- iPhone 18 Pro Max
- Apple A20 Pro
CPU
- iPhone Duo
- 6-core CPU with 2 super cores and 4 efficiency cores
- iPhone 18 Pro Max
- 6-core CPU with 2 super cores and 4 efficiency cores
GPU
- iPhone Duo
- 7-core GPU with Neural Accelerators
- iPhone 18 Pro Max
- 7-core GPU with Neural Accelerators
Storage
- iPhone Duo
- 256 GB, 512 GB, 1024 GB, 2048 GB
- iPhone 18 Pro Max
- 256 GB, 512 GB, 1024 GB, 2048 GB
Expandable storage
- iPhone Duo
- No
- iPhone 18 Pro Max
- No
Cameras
Main camera
- iPhone Duo
- Fusion Main · 48 MP · ƒ/1.6 · 26 mm · Sensor-shift OIS
- iPhone 18 Pro Max
- Fusion Main · 48 MP · ƒ/1.48–ƒ/4.0 · 24 mm · Second-generation sensor-shift OIS
Ultra-wide camera
- iPhone Duo
- Fusion Ultra Wide · 48 MP · ƒ/2.2 · 13 mm
- iPhone 18 Pro Max
- Fusion Ultra Wide · 48 MP · ƒ/2.2 · 13 mm
Telephoto camera
- iPhone Duo
- —
- iPhone 18 Pro Max
- Fusion Telephoto · 48 MP · ƒ/2.8 · 100 mm · 4× optical zoom · 3D sensor-shift OIS
Front cameras
- iPhone Duo
- Outer Center Stage · 12 MP · ƒ/2.2; Inner under-display FaceTime · ƒ/1.8
- iPhone 18 Pro Max
- Center Stage · 18 MP · ƒ/1.9
Video recording
- iPhone Duo
- 4K Dolby Vision up to 120 fps
- iPhone 18 Pro Max
- 4K Dolby Vision up to 120 fps, ProRes up to 4K at 120 fps
Battery & charging
Wireless charging
- iPhone Duo
- 25 W
- iPhone 18 Pro Max
- 25 W
Charging standard
- iPhone Duo
- USB-C, MagSafe up to 25W, Qi2 up to 25W
- iPhone 18 Pro Max
- USB-C, MagSafe up to 25W, Qi2 up to 25W
Video playback (Manufacturer claim)
- iPhone Duo
- 31 h
- iPhone 18 Pro Max
- 45 h
Streamed video (Manufacturer claim)
- iPhone Duo
- —
- iPhone 18 Pro Max
- 40 h
Battery type
- iPhone Duo
- Dual built-in rechargeable lithium-ion
- iPhone 18 Pro Max
- Built-in rechargeable lithium-ion
Connectivity
Cellular
- iPhone Duo
- 5G (sub-6 GHz and mmWave), Gigabit LTE
- iPhone 18 Pro Max
- 5G (sub-6 GHz and mmWave), Gigabit LTE
Wi‑Fi
- iPhone Duo
- Wi‑Fi 7 (802.11be)
- iPhone 18 Pro Max
- Wi‑Fi 7 (802.11be)
Bluetooth
- iPhone Duo
- Bluetooth 6
- iPhone 18 Pro Max
- Bluetooth 6
USB
- iPhone Duo
- USB-C (USB 3, up to 10Gb/s)
- iPhone 18 Pro Max
- USB-C (USB 3, up to 10Gb/s)
NFC
- iPhone Duo
- Yes
- iPhone 18 Pro Max
- Yes
eSIM
- iPhone Duo
- Yes
- iPhone 18 Pro Max
- Yes
Satellite
- iPhone Duo
- Emergency SOS via satellite
- iPhone 18 Pro Max
- Emergency SOS via satellite
Build & durability
Frame
- iPhone Duo
- Titanium
- iPhone 18 Pro Max
- Aluminum unibody
Ingress protection
- iPhone Duo
- IP68
- iPhone 18 Pro Max
- IP68
Key differences
The most meaningful measured gaps in size and weight — not an overall winner.
Height
iPhone 18 Pro Max
45.6 mm taller
Thickness
iPhone 18 Pro Max
2.6 mm thinner
Width
iPhone Duo
6.1 mm wider
Display size
iPhone Duo
0.7 in larger display