I'm trying to decide which screen protector to get for my iPhone, and I was wondering how long the Power Support Crystal Film tends to last on the front screen of the phone before it needs to be replaced?
Don't know. I've never worn one out. The key is to protect the edges by a bumper type case. They last a year easily. If the edges are exposed, or even damaged by a case then it won't last very long.
mine lasted over a year easily, could have lasted longer but i had a fall while holding onto my phone and it landed face down on asphalt with my weight behind it.
screen's still perfect so i suppose it did what it was supposed to.