HDMI connection not working with IPhone 12 mini on IOS 16

Hi ReubenJN,

Thanks for the post! So we can assist, can you let us know what's happening with your iPhone and the HDMI connection?

As a start, iOS 16.3.1 was recently released, and updating could help, depending on the exact issue. Be sure to back up first: Update your iPhone or iPad - Apple Support

Also, are you using an Apple-made adapter? This link has some information that could help: About Apple Digital AV Adapters for iPhone, iPad, and iPod touch - Apple Support

"If you see video but can't hear audio

Make sure that you're using a Digital AV adapter (which has an HDMI port). If you're using a VGA adapter, it doesn't carry audio signals. To hear audio with a VGA adapter, you need to connect to the headset jack on your TV, monitor, projector, or stereo.

If an app doesn't display video or play audio

The app might not be compatible with your adapter. Check compatibility on the app's info page in the App Store or contact the developer.

If an alert says that an HDCP-compatible device is required

Your content might not be compatible with your adapter. Movies, TV shows, and certain streaming video apps require High-Bandwidth Digital Content Protection (HDCP). If you try to play these movies, shows, and streaming videos using a non-HDCP digital connection—like the Apple VGA Adapter—an alert will ask for an HDCP-compatible device.

If you need help with other issues

1. Disconnect and reconnect your adapter from your iPhone, iPad, or iPod touch and from your TV, monitor, or projector.
2. Make sure that your VGA or HDMI cable works, since the issue could be with the cable.
3. Remove any VGA or HDMI extension cables or converters. Accessories that convert a VGA or HDMI signals to different video formats (DVI, Composite, Component) aren't compatible.
4. Make sure that you have the latest version of iOS."

If you find the issue persists after you've covered everything above, use this link to check for options to reach us directly: Apple Support

Take care.

Hello ReubenJN!

Just to add my 5 cent’s worth, some people have fixed the problem by throwing away their old adapter and buying a new one. Especially since you mentioned it’s a non-Apple adapter, maybe that could fix your issue. See Smilin-Brian’s post for adapters.

I hope this is helpful. Good Luck!

Please see this lengthy community discussion: https://discussions.apple.com/thread/254300916

Try the following:

• USB-C Digital AV Multiport Adapter.
• Lightning Digital AV Adapter.

Avoid unauthorised HDMI adaptors like the plague! They will not always work; in my experience, some don't work at all with monitors or TVs. If you a start with an official Apple adaptor, you are giving yourself the best chance of success. Apple cannot be expected to consider ramifications of every unauthorised accessory when producing iOS updates.

I hope you solve your problem.