Chosen Solution
I fixed the broken camera lens of my brothers iphone 7. I opened the phone and unplugged the back camera. Removed the lens and replaced it with a new one. I didn’t remove the screen assembly. So far so good. After putting the camera back and closing the phone it kept showing the Apple logo and turning off. Endlessly. After hours of frustration I noticed the phone would boot correctly by unplugging the front facing camera ribbon. So I turned it off again and connected the ribbon to be sure. And yet again the phone got stuck in a boot loop. I Unplugged the front facing camera flex cable and got it running again.. I did not touch this connector with the repair. And I was very careful. I fixed a lot of iPhones but this seems very strange to me. I can’t find the problem. With the phone on I noticed the 3D Touch and home button/Touch ID are also not working. This is a different ribbon cable to my knowledge and too much of a coincidence. Also a connection that’s untouched by me or anyone else. Can someone point me in the right direction? I don’t know where to go from here. Many thanks! :)
Despite being careful, you may have damaged the flex cables. I would inspect them visually, preferably using magnification, to see if there are any tears, even the smallest ones. The FCAM/Sensor flex is especially prone to tears given its twist. For the Home Button, I would look at this question (iPhone 7 home button not working after screen replacement) and Rany’s answer for more info.
I have had the EXACT problem. Look at your camera FPC camera connection and make sure there isn’t any damage to it. The customer I had tried to repair their phone before I got it, so they stretched that camera flex cable too far when opening it, I believe. When I inspected the FPC camera connection, it was slightly scarred.
I’ve seen these things before. It could be damaged flex cables
I already had the same problem three times does anyone already have the problem and then solved?
My IPhone was having the problem looping on the app logo! I found that front camera was defective! I pullrd the camera connector and “bingo” the telephone boot it without any problem! Now in order to ansuwe the incomming call I have to turn on the speaker . If try to answer the call normally I dont hear the other person unless I go back and turn on the speaker! Pls Help! Wonder if by unpluging the camera affected the microphone! Pls Help!
