Chosen Solution
Recently, I have replaced an iPhone 6 screen the phone turned on but suddenly the image became distorted. I thought it was a screen problem and replaced by another screen. Now the phone just don´t turn on. Usually after replacing the screen the phone turns on but the screen remain black. The fix is usually just remove and put back the battery. But this iPhone just DONT TURN ON (doesnt even appear in iTunes). I have did everything. The phone only enters in DFU mode. I tried to restore the phone in DFU but it get stuck in “Waiting for iPhone”. Please help! It´s a clients iPhone and I am very upset because Ill have to pay him another phone.
This normally doesnt happen but it sounds to me like the mother board got shocked. This can be caused by not turning the phone off before starting to work on it. Thats really the only way it can happen. The next thing you can try is just taking it to apple. Dont even mention that you took the phone apart. Just tell them it just happened. Since its a customers phone, you really dont have any other choice if you dont want to buy them a new phone. If you are not around an apple store, then call them up and explain the situation, they might let you send it in so they can look at it. Hope this was helpfull.
