Why does my screen go black during calls?
I own and operate my own cell phone repair biz and need to figure this issue out asap for my customer. I've now had this happen to a couple customers phones.
The screen (LCD/Dig/frame) was replaced due to a broken screen. Went great till you turn it on and make a call and the screen goes completely black and doesnt turn back on till the other person hangs up. Not even hitting the lockor power or volume will get it to come back up. I've swapped out the proximity sensor with 2 or 3 new ones with no luck but I dont really think its that. Cuz when I cover the top front of the screen with my hand/finger the screen does dim! So the sensor is working. Front facing camera was replaced as well.
The customer immediately stopped using it after the screen broke so I dont know if this is caused by drop damage or if its something else.
PLEASE...I really need (the correct) solution for this issue ASAP!!
I don't see any physical damage anywhere on any components or motherboard and I know there is no historyof water damage.
Please if you reply to this, first, I thank you, but secondly, can you please NOT leave comments like "take it to a Verizon Store" or "its junk" or bring it to a repair person"...... (well dont even comment then lol!)
I KNOW there is a FIX for this, even if ts something im just completely forgetting or overlooking, mention it, I'm human:-)