Hi,

I'm having a very bothersome issue with my Xperia XZ2 Compact at the moment. I can't seem to reliably recreate the issue, but very often the touchscreen will suddenly stop registering touches, as though it was disabled. The screen is still on and displays everything, but all touch input stops working. Hard buttons still work.

In order to "fix" it, I have to:
1. Hold power button to show power options menu.
2. Click power button to lock/turn off screen.
3. Unlock as normal using PIN or fingerprint.

This wouldn't be too bad if the problem wasn't so frequent, but it really gets in the way and disrupts what I'm trying to do at the time. The issue seems to occur more frequently while using YouTube, but is not limited to this app.

Things I have checked/tried:
1. The phone is updated to the latest Android 10 version available for this phone.

2. Ran touchscreen troubleshooting test using the Help section in Settings (no problems detected by test).
3. I completed a factory reset.
4. I rebooted in Safe Mode.

The issue persists after factory resetting and using Safe Mode. Can anyone suggest what I do next?

Many thanks,

Kara