Recently i bought a new brand Sandisk micro sd card with 4GB of memory. This card is for my Nokia 2700 classic phone. I uploaded many of my favorite music files on it through my computer by using card reader. But when i put back in the phone to listen music, my phone does not read the memory card, it says "no memory card inserted". I don't know what is going on, i can access this card on my computer but unable to read in the phone. Please help me.