No signal after screen replacement.
Hi guys. I need help with an iPhone 6. Mind you this is not the first iPhone 6 LCD I replaced so I'm not exactly a beginner. I did everything by the book as I replaced the cracked screen and everything seemed okay after reassembly. But after about 30 minutes , an hour tops of testing the signal dropped and I can't seem to be able to get it back. I tried disassembling everything again and looked if everything is in order and seems that everything is properly connected back. The client tried to send it back to warranty without talking to me first and they repair centre said that it MIGHT be that the motherboard got damaged while replacing the LCD but I find it difficult to believe as I have replaced and least other 20 iPhone LCDs in the past without any issue. Now of course I have to take full responsibility and I am evaluating if I should change the whole motherboard or not. If anyone could point me in the right direction and help me avoid doing that I would greatly appreciate it.
UPDATE: No..the person asked if signal problem could be because he changed the screen. As for me...I really don't know...I used plastic tools...quality spare screen. I'm asking my self now if maybe I put the wrong screw but..small update...when I do a factory reset the signal comes back for about 5 minutes in which I'm able to make phone calls after which the signal is lost again. I'm lost...can't figure out what it is. Anyone knows where exactly I'm suppose to look for damage signs? The phone was working prior to the lcd replacement, that, unfortunately I know for a fact.
Is this a good question?
3 Comments
I would look for signs of water damage.
by Josh W
Ok guys so here's where I'm at. Dismantled everything and everything seems fine...no screws were wrongly fitted. So, after further testing I've noticed the following, immediately after boot up signal is working fine, 4G works , full signal. I can call , made a 40 minute phone call and everything was fine, if I continuously call different numbers the phone will work fine with no issues whatsoever but...if I leave it for 20-30 seconds ,basically the time for screen to shut down everything goes south, signal drops, no service displayed and that's it...after 2 hard resets I've got to the point where the signal goes away, no service , than after 20 seconds it comes back full signal bar but I can't make any calls, I get call failed if I try to call anyone, and obviously I can't call the iPhone sim it goes straight to voicemail. I'm running out of ideas, I'm thinking that maybe it's the baseband ic, but how could I have damaged it since it has the metal protection and changing the LCD you don't go anywhere near it?
by Rosu Catalin
Technician should check if the network antena is properly fixed or any rust accumulation on its connectors
by Rajeev