LG Rumor Touch not recognizing memory card?

I just got an LG Rumor Touch phone from virgin mobile and am trying to use the memory card so I can use it as an mp3 player. I got a microsd card and it fits in there fine. I put the card in the adapter and then in the computer and my laptop recognizes it just fine. but if I go to anything where the phone needs a memory card it says "please insert memory card" and doesn't recognize that there is one in. It is pushed in all the way. How can I fix this?

Thank You!LG Rumor Touch not recognizing memory card?
First you need to format the memory card for you phone. Put it in your phone and go to main menu%26gt;tools%26gt;mass storage%26gt;format memory card. But doin this will erase everything. I know it sucks. Then put music on it. Whenever the memory card isn't formatted for the phone it won't recognize it. So doin this should work. Hope it helps if it dont then Idk why. I have the same phone. Worked for me