I have an iPhone 4 from AT&T, that I've had since September 2011. My iPhone has always had signal issues, I almost never receive service in my everyday places. My house, work, school, even in the car at times I have no service. I have two friends with an iPhone 4 running AT&T, they have service in some of these spots. Is there something wrong with my phone? And what can I do about that?
