my issue started back in december. Mine usually happens when i am on a phone call holding the phone to my ear. If i take the phone away while still on the call the screen stays black. I recorded this while on the phone with an apple support person and they did nothing. I took the phone into the store back in december and they claim they replaced everything but not the camera or screen. Which i find odd since it is the screen that is causing issues. I have restored the phone, reset, and even completed deleted and started from scratch and it still does it. I do have a glass Zagg privacy screen protector on so not sure if that is blocking sensors at the top? However i am so frustrated with this phone i am ready to trade it and go with s24 ultra. i have had every iphone since the beginning and this is beyond ridiculous. The fact apple is not even trying to fix it is what is truly making me upset the most.