Been using the MPX220 for a few years as a backup and never had any problems switching the sim back and forth between it and my primary phone. One day I set it to "meeting" to silence the ringer and it wouldn't switch back. I had a silent phone and the sounds were inaccessable in File Viewer. So, I did a hard reset only to find I can now set my favorite ringtones, but other problems popped up. First the home screen is set to Basic with no indications for text messages, meetings or voicemail...just a plain Windows wallpaper with the date and time. Also, the contacts I put back in were gone the next time I tried to use them. Is there some way I can regain the functions I've lost?