iPhone Duo Repair

The iPhone Duo, referred to in rumors leading up to the September 2026 keynote as "iPhone Ultra," or "Phone Fold," is Apple's first foldable smartphone. Released alongside the iPhone 18 Pro and 18 Pro Max, the Duo features an all-new shape and design, similar to Samsung's Galaxy Z Fold8. It has a large front display and opens to reveal an even larger ~4:3 aspect ratio 7.6-inch seamless inner display. Its frame is titanium, like the iPhone 15 Pro, and is also the thinnest iPhone at the time of release.

Along with its brand new form factor, the iPhone Duo also features Apple's new and redesigned A20 Pro chip, which integrates the system memory next to the APU package, like on their M-series processors. The A20 Pro chip is built on a new 2nm process and supports 50% better memory bandwidth than A19 Pro. Essentially now a "mini" M-series, the A20 features two "super" cores and a second 16-core Neural Engine.

The iPhone Duo retains 120 Hz on both displays, retains MagSafe charging, retains IP68 water resistance, but uses only two rear 48 MP cameras. The variable aperture from the 18 Pro is not present on the Duo. The inner display has an under-screen selfie camera and supports Apple Pencil. Touch ID on the power button replaces Face ID.

The iPhone Duo is available in Night Sky or Star White and starts at $1,999.

You can identify the iPhone Duo by the model number printed inside of the USB-C charge port.

• A3447
• A3719
• A3720

You can also find the model number through the phone's UI by going to the Settings app and navigating to General > About. Tap on the number listed in the Model Number section and it should change to a format that looks like the numbers above.

Additionally, Apple offers a quick online tool to help identify your devices: Identify your iPhone model.

The iPhone Duo is unique, featuring a 7.6-inch (diagonal) inner folding screen and titanium side rails. It has two rear cameras.

Volume controls are on the top edge, while the power button and Camera Control button are on the right edge. Two cameras protrude from the backside. The iPhone Duo has no home button and no Action button.

Dimensions:

• Closed: 117.8 × 84.1 × 11.3 mm (4.64 × 3.31 × 0.44 in)
• Open: 117.8 × 164.6 × 5.2 mm (4.64 × 6.48 × 0.21 in)

Weight: 254 g (8.96 oz)

Water Resistance: IP68 (maximum depth of 6 meters up to 30 minutes)

Colors: Night Sky, Star White

Operating System: iOS 27

Processor: A20 Pro chip

• 6‑core CPU with 2 super and 4 efficiency cores
• 7‑core GPU with Neural Accelerators
• Dual 16‑core Neural Engines
• Hardware‑accelerated ray tracing

RAM: 12 GB LPDDR5X

Storage: 256 GB, 512 GB, 1 TB, or 2 TB

Batteries: Up to 24 hours of typical use

• Dual li-ion batteries
• MagSafe and Qi2 wireless charging up to 25 W

Ports: 1x USB-C connector

• Reverse charging of accessories
• DisplayPort
• USB 3 data transfer (up to 10 Gb/s)

Outer display:

• 5.4-inch “Super Retina XDR” OLED
• Ceramic Shield 2 glass technology
• Multi‑touch
• Haptic Touch
• 1398 × 2034 pixel resolution (460 ppi)
• ProMotion (up to 120 Hz)
• 2,000,000:1 contrast ratio (typical)
• True Tone
• P3 wide color gamut
• 1000 nits max brightness, 1600 nits peak (HDR), 3000 nits peak (outdoor), 1 nit minimum
• Fingerprint-resistant oleophobic coating
• Dynamic Island
• Anti-Reflective Coating
• Apple Pencil (USB-C) support

Inner display:

• 7.6-inch “Super Retina XDR” folding OLED
• Nano-texture
• Multi‑touch
• Haptic Touch
• 1878 × 2670 pixel resolution (430 ppi)
• ProMotion (up to 120 Hz)
• 2,000,000:1 contrast ratio (typical)
• True Tone
• P3 wide color gamut
• 1000 nits max brightness, 1600 nits peak (HDR), 3000 nits peak (outdoor), 1 nit minimum
• Fingerprint-resistant oleophobic coating
• Dynamic Island
• Anti-Reflective Coating
• Apple Pencil (USB-C) support

Rear "Dual Fusion" camera system:

• Main module
  • 48 MP
  • 26 mm, ƒ/1.6 aperture
  • Sensor-shift optical image stabilization (OIS)
  • Autofocus with Hybrid Focus Pixels
  • Enables 12 MP 2x optical-quality zoom
  • 4K120 video recording
• Ultra-wide module
  • 48 MP
  • 13 mm, ƒ/2.2 aperture
  • Autofocus with Hybrid Focus Pixels
  • 120° field of view

Outer front camera:

• 12 MP Center Stage
• ƒ/2.2 aperture
• 4K60 video recording
• Retina Flash
• Ultra-stabilized video
• Smart HDR 5
• Dual Capture
• 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
• Slo-mo video support for 1080p at 120 fps
• Time‑lapse video with stabilization

Inner front camera:

• Under-display FaceTime
• ƒ/1.8 aperture
• 1080p60 video recording
• Ultra-stabilized video

Sensors:

• Touch ID
• Barometer
• High dynamic range gyro
• High-G accelerometer (Crash Detection)
• Proximity sensor
• Quad ambient light sensors

Wireless Connectivity:

• Apple N1 wireless networking chip
• 802.11be Wi‑Fi 7 with 2x2 MIMO
• 5G, sub-6 GHz and mmWave
• Gigabit LTE with 4x4 MIMO
• Bluetooth 6
• Second-generation Ultra Wideband chip
• Thread networking technology
• NFC with reader mode
• Express Cards with power reserve
• C2 modem

• Apple: Official iPhone Duo Specs
• Wikipedia: iPhone
• Wikipedia: Foldable smartphone