Its not very clear how to rewind or fast-forward music on the Apple iPhone, iPad or iPod Touch.
The feature is so hard to find that some users think there is no way to do it.
you could though, and heres how.
iOS 7 and Higher
iOS6 and Lower
iPhone & iPad: Fast-Forward & Rewind Music
How to fast-forward or rewind music on the Apple iPhone, iPod Touch, or iPad.
