I am sitting here at work with my boss. We each have a VZW personal phone, and a VZW business phone. 4 phones total. All 4 are showing no service. My personal phone has even gone so far as to randomly say the SIM card is not from Verizon. I drove about 5 miles away from work at lunch time and both of my phones showed signal and received/sent messages that had stacked up. Got back to work, and I'm back to the "no service" thing again.