Chosen Solution
Hello, i replaced the LCD on the iPhone 7 Plus and tested out before closing the screen. It worked everything fine and then I closed the screen and screwed the bottom. I turned on the phone again and it’s stuck on the Apple logo boot. So I opened the screen again and tried to turn on then everything is fine. What issue might be in this case…? i also installed a new battery for this as well thank you for your time!!
If your iPhone 7 is boot looping only when it is closed up it will either be the camera flex or the home button flex. I would be leaning toward the home button flex. There is probably a small tear on the where it bends 90 degrees. You will have to look very closely some magnification would help.
Have you closed it back again(for a second try?)? I know for sure that ic chips can be defective in replacement screens. It’s weird that it works fine while open but not when closed. You didn’t mix up any screws at all right? Have you completely disconnected and reconnected the screen(after disconnecting the battery first)? Any visible damage on the flex cables?