Chosen Solution
After replacing my IPhone XS screen with the LCD option from IFIXIT the phone screen only seems to work after the phone has been restarted, not after pressing the power button. The phone remains on, as switching it from silent mode to unsilent mode creates a vibration. So the only way that I am able to use the phone at the moment is by doing a forced restart each time. I have done a backup, put the phone in recovery mode and done a full reset and a device firmware update and the issue is still there. Any advice?
I had a similar issue with an LCD replacement on an OLED phone, except mine was that touch would stop working after standby and similar to you, only a restart would alleviate this issue. I had a second screen on me and after some troubleshooting I just swapped the screen and it was good. Since you already troubleshooted software, I’d say that it’s just the hardware and you should try a new screen. Good luck!
