I hate to read these posts! I have had my Charge for two months and just had to replace the SIM card today. I traveled earlier this week, used airplane mode. Maybe had nothing to do with it, but right afterwards I had no 1X or 3G data. Still worked on wi-fi connection and 4G. I called tech support and they set up a SIM replacement at a local store. No charge and took about 15 minutes. I hope that is the first and last time I need to replace (crossed fingers).