Chosen Solution
I bought the battery replacement kit and followed the directions. I practiced on another, identical, broken device, so was pretty familiar with the procedure when I got to the “real” phone. It seemed that all went well. When I fired it up (before applying the final adhesive) I got no screen response. I charged it overnight for about 14 hours (no screen indicator during this time). When I press and hold the power button I feel a haptic vibration. The vibration is very brief. That would seem to indicate that the battery is live and connected. I don’t know what to do now. Any thoughts? Bill
Have you checked that there no component missing near the display connection socket ? unfortunately I have the same issue and i think is due to some capacitor broke during the flat removal :( i bought a new display, and both old and new make no life signal
