I have been having a problem with the incoming data cutting out on my Thunderbolt. It isn't a 4G problem--when it cuts out, it cuts out compeltely (no 3G either). The phone signal is not affected. This started a month or so back, but would only happen when I was using the Facebook app. Now it cuts in and out randomly no matter what I am using (and almost always immediately upon the start of an app that uses data, e.g., Facebook, Twitter, Godville). As you can imagine, this is beyond frustrating. Any thoughts as to whether this is a software problem, or is my phone just f-ed? Thanks in advance.