I have assigned specific ringtones to certain contacts on my MAXX. Then I have a default ringtone of course. Every couple of days my specific ringtones convert back to the default. I've had this phone for about a month and it does it a couple times a week. I'm not aware of a "save" button anywhere. When I assign the ringtone it says "successfully saved ringtone" so I can't figure out what's going on. I had a Droid X before the MAXX and the process was the same. Just can't figure this out. It's very annoying. Any suggestions?