I just got my phone on Wednesday, I had gotten a 16GB SanDisk micro SD card. I put about 6.55GB worth of music on it then put the card in my phone, it started scanning media files but it stopped at 98%. I left it in for a while and it went back down to 0% Figuring it could have been the card, I took it back and got a new one and it does the same thing. My boyfriend has the same phone and the same SD card and his works perfectly fine. I'm thinking it might be a music file, but I'm not really sure.