Chosen Solution
I dropped my phone and half the display quit responding to touch. Everything else worked fine. I ordered and replaced the panel and afterwards it works fine for 10 seconds or so then doesnt respond to touch for 10 seconds or so. Locking the phone then unlocking resets it and it works fine right after unlocking for the 10 seconds. Im wondering if its a bad panel that ifixit sent me. Any help would be appreciated.
I had a similar issue and the fix I found was quite weird but worked. I just dissamsembled the whole phone in pieces and rebuilt it. It stopped acting weird after that and it’s been 2 weeks since then. Have you tried an hard reset? The software could be the cause of all your problems as well. A bent frame and too much pressure on the screen could also cause those symptoms. Start by doing the factory reset and see if it works for you, otherwise I’d advise testing the frame and making sure it isn’t bent or applying some weird pressure on the display assembly. Good Luck, -Bruno