Wondering if anyone has any opinion -- I just bought a used 4S on eBay still under Apple warranty, and I just noticed something weird with the earpiece on the handset. It looks as though there is a clear plastic screen protector that was installed off-center, but there is no screen protector. I'm going to try to post an image here. I'm wondering if I would be eligible for a replacement iPhone under Apple's warranty coverage for manufacturing defects?