How to connect iPhone Duo to a monitor or TV
USB-C with DisplayPort, AirPlay and the right cable: how to get iPhone Duo on a bigger screen at up to 4K HDR.
iPhone Duo's USB-C port does more than charge. Apple lists DisplayPort support and USB 3 speeds up to 10Gb/s, which means you can mirror or output video to a monitor or TV.
Option 1: USB-C to a monitor
Apple specifies video mirroring and video out up to 4K HDR through native DisplayPort output over USB-C.
- Use a USB-C monitor that accepts DisplayPort over USB-C, or a USB-C to DisplayPort/HDMI cable.
- Plug it into iPhone Duo.
- The screen mirrors automatically, or the app shows video full screen.
Option 2: USB-C Digital AV Adapter
For TVs with HDMI, Apple lists the USB-C Digital AV Adapter (model A2119, sold separately). It also gives you a pass-through port to charge at the same time.
Option 3: AirPlay, no cables
Up to 4K HDR AirPlay works for mirroring, photos and video to Apple TV (2nd generation or later) or AirPlay-enabled smart TVs. This is the easiest option on the couch.
Tips for a better setup
- Use a USB 3 cable if you also plan to transfer files. Basic charging cables are often limited to USB 2 speeds.
- Charge while you present. Read our charging guide for the right adapter.
- Keep the inner display for notes while the external screen shows your content.
Supported formats
HEVC, H.264 and AV1 video, with HDR in Dolby Vision, HDR10+/HDR10 and HLG. For wireless specs see our Wi-Fi 7 and connectivity guide.
Recording on iPhone Duo? Try PromptSlate Studio
Presenting or recording a talk? PromptSlate Studio keeps your notes on the Duo while you face the camera or the room. See PromptSlate Studio for iPhone Duo.
Related iPhone Duo guides
From the maker
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Spotted something to fix, or an app we should cover?
This article is independent research, cross-checked against Apple's developer documentation. If something's out of date, or you know an app that deserves a look, let us know — and if you're building for iPhone Duo yourself, we're happy to talk.
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