原帖由： Skye Anderson ,
Hello. There are many possibilities. Here are a few of the most likely ones… damaged camera flex cable/mic/speaker Bad home button flex(make sure it’s not damaged at all…and make sure it’s connected properly on the screen… the screen itself could have damage to the flex cable. Sometimes in the mini ic chip in the flex or screen location,it could be defective…so the iPhone recognizes it’s not genuine. The ic chip tells the iPhone it can work with it. i has issues with my brother’s 6s screen replacement. It worked fine,then got stuck in recovery mode. I unplugged the battery and messed around,and it started working again. Then,it stopped again!!! I swapped the backup screen I had onto it,and no problems at all. my moms 5s camera flex…I managed to scratch it accidentally. It caused it to boot loop. It took a while to find the damage. I replaced it,and no problems at all…with the damaged flex,it did work if I took the battery out and restarted. But if it was powered off and tried to turn it on,it was 50/50. please check all these possibilities. Try a different camera flex if you have one(the FaceTime one). Check the home button flex cable. Try unplugging it if all else fails…but only do this if all else fails! If the flex rips,you lose Touch ID(The tough id has a tiny authentication chip inside tied to the logic board and would take EXTREME skill to repair the flex…and a microscope)It’s best to mess with the flex as little as possible. Let let me know how this works please!