I have a data plan with T-Mobile on my Sidekick 4g and it was working fine for a month or two but about a week ago it stopped. At the top I used to get a "4g" symbol or at times, an "E" but now I don't have anything at all. I tried pulling the battery and sim card and I called customer support and we did a bunch of basic troubleshooting and messing around with settings, and they told me to do a master reset, but none of that worked. I tried messing around with the APN settings and everything else that has to do with mobile networks but nothing worked. Why aren't I getting data on my phone???