My brother picked up his iP4 yesterday and a ZAGG invisiheld installed at Best Buy this afternoon. It's been working ok all evening until now when he was messing with the FB app and it just turned off. Ben trying everything to get it turned on also, not working. My iPhone and my sister-in-law's iPhone both got Zaggs installed today at BB and they're doing fine
Anything else I should be trying or am I going to best buy tomorrow?
Press and hold the home and sleep button at the same time. Hold until it forces a hard reset.
If that doesn't work trying connecting it to a computer and see what happens.