Under settings -> sound -> phone ringtone, "unknown ringtone" is listed.
Using the FX file manager app, I can see the Ringtones folder, and it's got a bunch of my own mp3s that I put there.
Yesterday I did a "clear app data" to try to resolve a different problem, and this may have caused it?
How can I get the phone to list all available ringtones again under 'settings'? Thanks for any help.