Support A problem with the default ringtone

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http://androidforums.com – I have a problem with the default ringtone. The factory default ringtone is "curve ball blend". I have spent many an hour looking for that ringtone in my phone so I can delete it, but I can't find it. I have many times set the main ringtone to something I want just to have the phone at a certain interval (I haven't been keeping track of the interval) change it self back to the factory default ringtone. The interval is a few days to a week. The phone will also reset the ringtone back to the factory default ringtone if the phone is turned off or the battery is pulled. All other ri (General)