Kingston 2GB Secure Digital Memory Card "lg slider phone manual" Questions

LG U990 Viewty phone but it is not recognised ie message ''external memory card not loaded''. What am I missing? Your phone may not support 2 gb cards. Also check the little slider lock on the card to

lg web slider and purchased a new silicon power micro sd memory card (2gb) to have extra space/room to store-download music but every time I bluetooth a song from another phone to my lg is states that