just got the vzw galaxy nexus on 12/16 and i've been getting a error message regarding the sim card being removed although i haven't touched the sim card. the error message reads as follows: SIM card removed The mobile network will be unavailable until you restart with a valid SIM card inserted. sometimes it will recognize the sim card after the reboot but sometimes i have to pop the card in/out and restart. has anyone had this problem? should i return the phone? request a new sim card? could it be a software bug?