My mobile data never seems to work at all anymore. A few months I flashed CM 10.1 and my data seemed to go from always have 4G to almost always having 1x. I flashed PACman rom then, the same problem, tried jellybam, nothing, finally I restored to stock and tried rerooting and flashing the latest cm 10.2. I've been running it for about a week and a half now and I get maybe 50% of the time 1x connection and the test of the time nothing. Would getting a new SIM Card help?