Does anyone have knowledge as to how I can keep my custom ringtones that I have set to stay working? I have checked every possible error on my part (silence mode, etc) and even though my phone shows the correct desired ringtones I have set, it still rings with the manufacturer set defaults. It worked when I first set it up yesterday but today, it won't recognize my custom ringtones at all. INFURIATING! Thinking of returning phone; I need to be able to customize my ringtones.