I got my nexus on 12/19. So far at least once a day I can't receive or make phone calls, can't text or browse. The phone shows no bars at all and no 3G or 4g. If I realize it before I make a call, then switching from lte to CDMA and back fixes it. If I make a call in this state, then a reboot is the only solution because the phone is hung dialing and it is mostly unresponsive. Should I go get a new one? Even airplane mode will not kick in in this state...