We just recently got the Samsung Intensity III and have the $50 unlimited pre-paid plan, which I just paid the $50 on. It will make and receive calls here at our city apartment but when we go to our country house it will only accept calls, it will not let us make calls but we can make and receive texts. Does anyone know what the problem might be? Also, since the pre-paid plan has unlimited talking, do I only need to pay the $50 monthly fee? I shouldn't have to have extra money on the account if we are not going to be downloading apps or ringtones or anything...right?