please help how can I change my sd card on storm I need my pictures ringtones and videos on the old 8gb sd but don't know how to transfer the files to the 16gb card
Use a micro-SD card adapter and plug with 8GB Card into your PC. Copy the entire card to a folder. Then plug the 16GB card into your PC and drag the contents onto your card.
Where did you get your 16GB card from and how much did it cost?