The 4gb Micro SD card is not working. First I formatted it with my phone then I put it in my computer and a picture on it and safely removed it from my computer and put it back into my phone. It showed the picture was there. So I then removed it from my phone and put it back into my computer and added a bunch of pictures and music, then I safely removed it from my computer and back into my phone and everything worked. I took it back out and added one more song and safely removed it again and put it back into my phone and my phone wouldn't show anything and asked me to reformat the memory card. So I put it back into my computer and deleted everything and put it back into my phone and reformatted it and back into the computer and added a song, back into the phone the song was there and worked, then back to the computer added all kinds of stuff and it all worked, but then I took it back out and added one more thing and it stopped working again, the phone asked me to reformat. So I deleted everything and reformatted again and tried to put stuff on it and it wouldn't show anything there. I took a picture with my phone and then it saved it to there but then I deleted the picture and now it wont save anything to it and just keeps saying the memory is full and or the card needs reformatted and I can't put anything on it.