Hi, I just got a stratosphere phone about two weeks ago, and at some point the mobile network disappeared. All I see is bars instead of 4G or 3G icon on top. I called the customer service and they told me to reset the phone, and after that it worked for about an hour and then 3G changed to 1x, and then all I see is bars again. This is really frustrating, how do i get my mobile network back? I was excited about finally getting a smart phone, but this is useless without mobile network. Can somebody help me?