Is anyone else having 4G LTE problems? I've have my RAZR about 3 weeks and 4G service less than 1/2 of that time frame. Is this a Knoxville problem, or a nationwide issue? Also, a VZW rep says there is no problem with my phone, only network problems. Help!?!?!? I am quickly becoming dissatisfied. I have a great history with Verizon and this is making me sad/upset.