Ringtone disappearing
I bought a ringtone from iTunes a few months ago and everything was fine. Then one day my phone rings and it doesn't play the ringtone. I look for it in the phone and it disappeared. How do I get it back?
iPhone 5
Here is the link to the answer: Restore missing tones on your iPhone, iPad, or iPod touch running iOS 8.1.1 or later - Apple Support