So I've had my iPhone 3G for about 5 months and I love it. However, I hate the service or the actual phone part of the iPhone. I had my sim card replaced once already. My wife and I can never hold a call longer than 60 seconds. When I'm at home, I have full service and I try to call someone, and it just says that it's trying to call, but then it fails. It does it on both of our phones, but we both have full service (4 bars). Is there anything I can do or am I just screwed with AT&T's service? Any advice is much appreciated. Thanks.