Could be a sign your phone been compromised if it says under settings, sound, ringtone "unknown" and cannot select a ringtone period! Have to restart your phone or try to hard reset the device! For me took flashing stock rom to wipe my hacker (my exbf) out of my device and also had to reinstall windows 7 pro on my laptop too! Be careful everyone and trust me if you think someone in your phone or computer, that hunch feeling you get in the pit of your stomach? You are most likely right as after all you know your phone period! Thanks Angie S.
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