Chosen Solution

Hey guys, recently I just replaced my iPhone screen and battery simultaneously. I put all together and it works great. However, I woke up the next morning to the phone completely dead. I thought it’d be a simple fix but my phone won’t reset, turn on, or anything. I’ve tried everything to figure out what the problem could be I disconnected the battery and put in the charger but the screen won’t turn on either so I took out the screen and installed my old broken screen with the charger and still nothing worked. I examined the connectors and everything on the phone but everything looked fine. I could really use some help here because I’m just in high school and can’t afford a new phone.

Put back your old battery or buy a new battery and see if the phone boot up.

If Phone worked fine, then most likely battery and LCD is fine. Battery most likely had a charge in it and couldn’t charge back up due to pry damage to the Moffset(s) in the picture. If you are handy with a multimeter or have magnification… look around the circled area for missing/lifted or damaged components needed to charge your battery. Or use a Multimeter in “Diode Mode” to take the readings of the battery connector and see if they are correct or show “OL” (Open Line).

It sounds like a possibility that the tristar ic was damaged and it will stop charging and data transfer on the phone. Update (06/19/2020) Take it to a repair shop and have them test the tristar ic. It only takes a few seconds and most places will do it for free.