Since I have switched to the MT4G, I have had people telling me they call me, but I never get their calls. Its not even showing as missed, just nothing. I tried calling it myself a few times and nothing. Most of the time when I try to place a call, it takes 15-30 seconds for it to connect the call. Tried calling TMO today, the rep said just pull the battery every now and again, but that hasnt helped it at all. Any ones else having this problem? I live in a 4G area, never had this problem before with my unlocked iphone, or my TMO blackberries.... any help?