I have the Samsung Galaxy S II. This weekend I moved everything over from my SD 2GB disk to my SD 8GB disk. Now for some reason, my ringtones for calls work fine. However, no matter what I set the Notification rington to, it only vibrates. No, I do not have it on mute as I call my phone and I hear the ringtone, but when someone texts me, it only vibrates. When I was at the store I noticed above the 4G it had ZZZZZZ I don't know if that matters. I've gone into sound and when I adjust the volume I hear it just fine. ?????