Within the first week of having the DNA (Got it opening day in November) my sim card kept failing. The only way I knew it was happening was from a lack of receiving calls/texts and small error message with an "x" in the notification bar. Restarting the phone would solve the problem temporarily but it would recur. Verizon swapped out the sim card and things were fine until a week ago when it started happening again. They swapped it out again and things were fine until 15 minutes ago when it happened AGAIN. Hmm, maybe I have a lemon?