Phone not turning on after reassembly.
My iPhone's camera went black and the flash stopped working. So, I thought the connection must have gotten lose. I disassembled the phone up to the step of "disconnecting the battery connection cable". I tried to remove the battery, but gave up due to the fear of damaging it. Then, I put the phone back together. I didn't turn on! I tried every method and also connected it to iTunes to test in DFU mode, but unfortunately, it didn't respond. Its 13 months old right now. Please help me revive it!!