Chosen Solution
I replace a screen on a iphone 6 now it doesnt wanna turn back on, it doesnt make any sound when i plug it to the charger. what could it be wrong and i tried putting back the original screen and doesnt wanna turn back on ?
You unhooked the battery before swapping the screen, right? I would open it back up and just make sure that that connection is solid. It could be as simple as that.