My girlfriend's phone had perfectly fine 4G signal for the first few days that she had it... and then it changed from ok 4G at work, and no signal at all at home, so we had to settle for wifi (! yup her 4G signal was much faster than our home DSL connection). Then, for various reasons, we did a full reset and the same thing happened... perfectly fine 4G signal here and at home for a couple days, and then it dropped it's 4G and just never seemed to pick it back up again, in the house... so we gave in to wifi, again. Then I rooted the phone, so I could try to squeeze some more battery life out of the it, with SetCPU... and the same thing happened, again. We got a couple days of fine 4G signal here at the house (and at work, as usual), but it just mysteriously dropped its signal, so we went to wifi, again. According to the coverage map, our house is right on the line between 4G and extended 4G. And I did try that "turning on and off the 4G radio" ... and, since it was doing that thing where it would go to absolutely no data, when it lost 4G, we did try switching from eHPRD to "Enable" on the cdma modem mode, I think that did allow us to connect to 3G, but I haven't enabled that again, since the first reset, and it didn't help us get a 4G signal in the house, once it lost it that "first" time. So... conspiracy theory? Real issue? Anyone else have anything similar happen?