My new charge and my wifes wont stay on 3G networks. We have to restart the phone and then it will restart with 3 g service and after about 5 minutes or less it goes back to regular service with no connectability. What is up with that. It happens everytime, restart, 3g for 5 minutes and then back to regular service. My friends can be sitting right next to me with there phones that aren't the Charge and they all have 3g. Any ideas.