Does the OnePlus 9 Pro support USB-C to HDMI?
Yes, it works.
The OnePlus 9 Pro supports DisplayPort Alt Mode over USB-C. Plug a USB-C to HDMI cable into a TV and it outputs video up to 1080p.
Reported consistently by owners. Not documented by the manufacturer.
Owner reports say output works on most 720p and 1080p displays but fails or crashes on many 4K displays. Test with your monitor before relying on it.
Specs that matter
- Wired video output (DP Alt Mode)
- Supported
- USB port
- USB 3.1 Gen 1
- Max wired output
- 1080p
- Desktop mode
- None
- Released
- 2021
- Data source
- reported · ehomewei.com
How to connect the OnePlus 9 Pro to a TV
- Get a USB-C to HDMI cable rated for 4K 60Hz. A 2 metre cable is the practical maximum. See the cable guide.
- Plug the HDMI end into the TV first, then the USB-C end into the phone. Switch the TV to that HDMI input.
- The phone screen mirrors immediately.
- Open the USB-C to HDMI app to play photos, videos and music in a TV layout, pick 1080p or 4K, and toggle audio.
Streaming services such as Netflix and Prime Video block HDMI output on most Android phones through HDCP. Local files and your own photos are not affected. Details in the black screen guide.
Frequently asked questions
- What cable do I need for the OnePlus 9 Pro?
- Any USB-C to HDMI cable or adapter that supports DisplayPort Alt Mode and is rated for 4K 60Hz. You do not need a powered hub or a brand-specific cable.
- Does the OnePlus 9 Pro need an app to connect to a TV?
- No app is needed for basic screen mirroring. The USB-C to HDMI app adds a TV layout for photos, videos and music, resolution control and an audio toggle.
- Why does my OnePlus 9 Pro show a black screen on the TV?
- Check the TV is on the right HDMI input, try another HDMI port, and remove any adapter chain. Streaming apps such as Netflix block output through HDCP and will show black on purpose; local files play fine.
- Can the OnePlus 9 Pro output 4K over HDMI?
- Yes, up to 1080p with a suitable cable and TV.