I'm here trying to research this problem. It seems other people have this same issue but I havent managed to find the thread with a fix yet...? Anyway, my Droid Razr keeps losing the custom ringtones that are assigned to contacts. Not really worked out why as it seems random. It could be overnight or when I turn phone off and restart -but then not always. Its annoying and I wondered if someone can help with the best solution please?