Me and my father both have samsung behold and suddenly today we both cant send texts or make calls, the phone indicates that i have full service as well as 3g coverage but nothing happens texts fail and calling connects to nothing and then closes the call. i have tried hard resets, im assuming there is some thing going on since both mine and my fathers phone have the same symptoms but whats funny is my brothers phone is working just fine and we all are currently using the tMobile network and are all on the same plan so i was wondering if any one else was experiencing this?