i upgraded mine. i first took all the info off my bigger card so i wouldnt ruin any info on it then unmounted the old one and took it out and put the bigger on in. it recognized it but i think there are some differences in the format style and gave me an error on my computer when i tried to view the sd card so i just formated it using the phone and everything works fine now. i then put on the info i wanted on my card. its not a problem. at least it wasnt for me.
good luck
