Worked great for a while, got all my songs and other media loaded up and my phone went on the fritz. I was able to exchange the phone and I've reloaded my apps and gotten my contacts all back in play. Now I've tried to download my music onto my SD card and it's telling me the SD card is unavailable. Any ideas on what's going on here? I would like to re-format and start over again but that doesn't seem to be an option on my phone. Any help would be much appreciated...