Bestbuy and circuit city have generic screen protectors that you can cut to fit. They work okay and are cheap but not as good quality as the ones cut specifically for the iPhone. I used the generic ones for a while and then I got a pack of the ones designed specifically for the phone at the local Apple store and have the first one still on my phone after about a month. Lasts forever and doesn't affect the touch screen at all (that I can tell). I would go with a better quality one specifically cut and designed for the phone. Worth the money.