I understood that I could use up to 128GB on the S5.
If this is true, why Can't I use a standard sandisk Ultra micro SD card of 64GB? The menu shows me I can unmount and format, but that doesn't seem to work. I tried formatting in MS-DOS (FAT) format using my Mac (I don't have windows), which worked for my Note 2 but not my S5.
If I try writing a file to the micro SD card it says: "ERROR, could not write file".
When I try to format using the phone, it says no card installed (despite the card being installed, its size being indicated, the unmount and format options being available, etc).
Interesting, I have a second one installed in my note 10.1 2014 edition, and that one behaves a little different. It is also not usable but it greys out the unmount and format options as if the card does not exist (yet still it indicates the available size). Note, for this one I also used the MS-DOS (FAT) formatting method on my Mac.
I know the micro SD cards for both the S5 and the note 10.1 2014 edition are both ok, because I tested them on my Note 2, which reads and writes to the cards perfectly fine.
Both the S5 the tablet and the microSD cards were bought on Singapore Airport.
For info, the tablet runs 4.3 and the S5 runs 4.4.2 straight from the box.
Can someone help me with this?