Chosen Solution
Hello Guys, I came across a series of problems with an Iphone I recently purchased. Well, I repair Iphones, but only the simple stuff. So i bought this Iphone 7 that had a shattered screen and that was lagging and had an issue with the home button. Homebutton is clicking multiple times when you click it. Except that, it works fine. I updated to Ios11 and boom…boot loop. I dug around and replaced some ribbon cables, displays, did some recoveries and found out that it would only boot up when I leave the proximity flex unplugged. It will take about 5 minutes to boot, but eventually it comes back to life. Another thing I discovered is that voice record was not working. I read somewhere that this could indicate a PCB problem. Next thing was the freezing. It works like a champ and lag free until i try to open an app, does not matter which. It will freeze for a few seconds. I also found out that the guy i bought it from tried to repair it himself, lost some screws and the flex brackets. Well, I hope that some of you guys can help me. I really hit a wall here.
Check if the logic board have any kind of damage on it , like screwdriver damage or corrosive water damage. You can change the logic board but be sure that is the logic board the problem. Might be a an input device peripheral is not work as expected and malfunction the logic board….. Or the logic board not working.
