OK, I'm on DNA #3. My first one performed flawlessly but the rubber back started peeling. They replaced it with a "new" refurbished unit which has been a SIM card error nightmare. I complained loudly that I want a "NEW" phone not someone else's problem, well I got another refurb and VZW claims I can't get a "NEW" one unless I buy it. I will give refurb #2 a shot but I am not happy. I have been a VZW customer since the day of the bag phone and have never needed to have a phone replaced.