I have this phone a bit under two weeks. Towards the end of the first week it locked up once- screen froze, unresponsive, then went black. Had to remove the battery to get it on again. This is now happening more frequently, maybe once a day on average. Generally the screen just freezes but once it froze and took on a jagged, sort of interlaced effect, reminiscent of an LCD cable being loose. So far the freezes have always been while I have actively been using it, it has never frozen in my pocket or overnight. My gut feeling is that it is a hardware issue. Any suggestions?