Chosen Solution
What is there in the back of a Moto X4 that prevents phone from booting up? I’ve replaced motherboard, charging port, battery and phone still won’t start. When I put the same parts into a Moto X4 with a cracked back, everything works, but not when I put them into the back I want to use - its in perfect condition. HELP!
J W Fred Klein since everything works until you try the new back the issue will be with that. Check to ensure it is identical to your old back and that it does not shorten anything out or pinch some flex cables etc.
