Over the past couple of days I've had a few instances where my DNA was not reading my SIM card and in one case lost data capability so I wasn't able to access the internet. And this morning I lost all capability. In both cases I had to restart the phone multiple times to get functionality back. Has anyone had this issue? Is it something I should worry about? The only thing i was able to correlate it with was an update for Voxer Walkie-Talkie as it seemed to start when I did the update. This issue hasn't been consistent as yesterday I no problems at all.