Chosen Solution
My iPhone wasn’t receiving the signal from my cellular network. I assumed it must be the cellular little part that receives the signal. So I replaced the part. However when I attached the screen back the phone no longer turns on. iTunes recognizes the phone when I put it on recovery mode. I don’t know what could’ve happened. I literally carefully took off the screen, unscrewed the part and then placed the screen back on. I’m experienced with screen replacements therefore I don’t think I some how damaged the screen. I don’t think the screen is the problem considering when I first plug the phone to iTunes, it doesn’t immediately recognizes it. I have to put it in recovery mode in order for the computer to recognize be iPhone.
Did you disconnect the battery right when you opened the phone? If so, does the phone show any signs of power other than in recovery mode and connected to iTunes?
