Answer to "iPhone won't turn on after screen replacement?"The problem is that either the back light coil or some soldered components are fried. It is an easy fix if you can micro solder. hope this helps. :)
Answer to "iPhone won't turn on after screen replacement?"Just replaced my iphone 5 with a new screen . But still it makes only a beeping sound when plugged into even a laptop . can someone pLease please help me . Thank you.