I am currently in an extended network, and my phone keeps trying to connect to a Verizon tower (and there are none where I live) and it is causing me to lose service. Well my girlfriend's Iphone 4 doesn't do that quite as much and doesn't lose service as much as my 4s, and stays more on the extended network. Verizon is pretty much clueless, and isn't much help anyway. They offered to mail me a replacement phone for free, but I am already going to an apple store tomorrow. My question is, do you think it is worth the hassle of replacing the phone to see if it will help, or is it a waste of time? Also, would Apple replace it for free? I have AppleCare+, and the phone is in perfect condition. Thank you.