I'm having the same issue. I had this problem several times a week, and it usually occurs in the AM, making it really unreliable to use as an alarm clock! I'm in Baltimore, Maryland (4G market), and it says I'm in Corona, CA. When I turn 4G off to save battery life, I still notice the issue. I powered fun off and on again, reset device, wiped handset, and swapped to a new device...still same issues. The phone auto corrects itself after a few minutes to hours. When I log into maps/ latitude, it shows the correct location on map, but still says Corona, CA. I spoke to VZW, and they said It's not a known issue. I encourage people to call, so they can find a software fix.