I'm on about my third day with this phone and though there's some learning to do (maybe Android version or the fact it's my first non-Motorola phone) so I won't ask about those yet. However the one thing I see so far that seems to be a glitch or issue is that the ringtone keeps changing back to "Unknown Ringtone". When I go in to settings > Sound > Phone ringtone it will be set to Unknown ringtone. but not really "set" because none of the available options will be selected. I can select one, be it one that came with the phone or one that I downloaded and put in storage, but it keeps reverting back. Not immediately, and not only when phone is restarted or following a power up. In fact, it doesn't necessarily do it on start up and I haven't figured out how long it goes before changing. Its pretty annoying and the fact that I waited 5-6 weeks for the phone, took at least 1.5 days to get it the way I like and apps installed, I don't want to turn it in. Anyone have any thoughts on a fix?