Hello, I recently purchased an unlocked 1st gen iphone from ebay. It worked perfectly for about a month, but then it gradually lost service until finally it would say nothing but "No Service" in the upper left corner of the screen. I've tried everything to fix it from restoring it to updating the firmware, but nothing has worked. What I was wondering was how much would it cost to get it repaired or replaced if I was to go to the Apple store or is there any chance of them replacing it no charge (I'm might be dreaming here)? The phone is in good condition with exception of the no service. I have an At&t account, but iphone is not activated under it. I would activate it if it would help my chances of getting it replaced. Thanks