I bought a 64Gb microSd card and managed to get the Galaxy to format at 64Gb. After transferring files and using up about 40Gb of it, I tried to move some apps over from the phone to the Sd card. All I get is an error that says there isn't sufficient disk space. I have installed Android Assistant too and it reports the card as only 12Gb. The Sd card does show up as being 59.36Gb (so correct amount) on the phone's Storage option in the Settings, with 39.21 Gb used, but doesn't show how the space is allocated divided by type. Should I find a way to partition the Sd card into 2 x 32 Gb and will it work if I do ? Not sure what to do , as I need to move apps over to the Sd card or I'll run out of the internal USB storage space.