Do OnePlus 7, 8 and 9 series phones support USB-C to HDMI?
No. The OnePlus 7, 8 and 9 series have USB 3.1 ports, but OnePlus did not connect DisplayPort, so there is no wired video output.
This is the most common surprise with OnePlus: a fast USB port that still cannot drive a display. It applies to the 7, 7 Pro, 7T, 8, 8 Pro, 8T, 9 and 9 Pro. The first OnePlus with video output is the OnePlus 12.
Every OnePlus 7, 8 and 9 series model
| Model | Year | USB port | Wired output | Source |
|---|---|---|---|---|
| OnePlus 9 | 2021 | USB 3.1 Gen 1 | Not supported | confirmed |
| OnePlus 9 Pro | 2021 | USB 3.1 Gen 1 | Not supported | confirmed |
| OnePlus 8 | 2020 | USB 3.1 Gen 1 | Not supported | confirmed |
| OnePlus 8 Pro | 2020 | USB 3.1 Gen 1 | Not supported | confirmed |
| OnePlus 8T | 2020 | USB 3.1 Gen 1 | Not supported | confirmed |
| OnePlus 7 Pro | 2019 | USB 3.1 Gen 1 | Not supported | confirmed |
| OnePlus 7T | 2019 | USB 3.1 Gen 1 | Not supported | confirmed |
What to do with a OnePlus 7, 8 and 9 series phone
- Browser Cast in the app. The phone serves photos, videos and music to the TV's web browser over Wi-Fi. Nothing to install on the TV.
- Chromecast or a smart TV. Cast from YouTube and streaming apps directly, with DRM handled by the TV.
- Return the cable. A USB-C to HDMI cable bought for this phone will never work with it and is not defective.
The full explanation is in how DisplayPort Alt Mode works.
Frequently asked questions
- Which OnePlus 7, 8 and 9 series models support USB-C to HDMI?
- None. No model in the OnePlus 7, 8 and 9 series has DisplayPort Alt Mode.
- Why does my OnePlus 7, 8 and 9 series phone charge but not show on the TV?
- Charging uses the power pins of the USB-C port. Video needs DisplayPort Alt Mode on the high-speed pins, which these models do not have. The cable is working; the phone cannot send video.
- Can an app enable HDMI output on a OnePlus 7, 8 and 9 series phone?
- No. Wired video output is decided by the phone's chipset and port wiring. The alternative is wireless: the Browser Cast mode in the USB-C to HDMI app, a Chromecast, or the TV's built-in casting.
- What cable works with the OnePlus 7, 8 and 9 series models that do support it?
- There is nothing to buy. Return the cable if you bought one for this phone.