So I dropped my iPhone yesterday and now the touchscreen not working in certain areas. The top right corner is completely dead, and sometimes it registers touches where I didn't even touch. I've tried cleaning it, restarting, even did a hard reset. The screen isn't cracked but the touch functionality is definitely messed up. Has anyone had touchscreen not working issues like this? Is this something I can fix myself or do I need professional help?
When the touchscreen not working after a drop, it's usually either the digitizer or the connection to the motherboard. The digitizer is the layer that registers touches. If it's not cracked but touchscreen not working in spots, the digitizer might have internal damage. This is a common DIY phone fix if you're comfortable opening the phone. You'd need a replacement digitizer, proper tools, and patience.
I had similar touchscreen not working issues on an old iPhone. Turned out the drop had slightly loosened the connector cable. A repair shop fixed it in 10 minutes for $50. Much cheaper than replacing the whole screen. Before attempting any DIY phone fixes, I'd get a professional diagnosis to see if it's just a loose connection.
If your touchscreen not working after a drop, check if you have AppleCare+. Screen repairs are much cheaper with it. Without AppleCare, a professional repair for touchscreen not working issues can be expensive. Before doing anything, make sure you have good mobile backup solutions in place in case you need to do a phone factory reset during repairs.