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:-)
I've tried with the rubber gasket in place and without the rubber gasket..... And tried the sensors for the D800 model even and they ALL react the same.
The customer also told me tonight now that when it's dark out or when he's in a dark room (pitch black) that the screen won't come on either.... Ugh. Is it possible it's the new screen at the little windows/holes for the sensors are off or to dark?
由 Amanda Felske 完成的
Do you still have the old screen? See if anything needs to be transferred to the new screen. Example metal ground tape.
由 smoggysasquatch 完成的
I've got the same exact scenario. Replaced screen on LG G2 and now the screen goes black and locks when connected to call....can't access keypad or hangup call. Did anybody find the solution?
由 hebbeh1 完成的
Read my solution at the bottom of the page. I hope this helps. I didn't find a solution online anywhere so I spent a couple hours figuring it out.
由 scott 完成的
Thanks for the reply Scott! And yes, it was the proximity sensor...apparently perhaps due to buying a cheaper after market non oem screen with a poorly aligned sensor mask. I ended up unplugging the proximity sensor (which I really don't see the need for in the first place) and the phone works perfect now. I actually prefer the phone without the proximity sensor and can easily toggle the screen manually as needed rather than the screen always being blacked out at the most inopportune times. Better than new!
由 hebbeh1 完成的