Hi guys i'm having issues with my sd card which most of times i can not access my sd card. i can't move or transfer any of my files or pictures into my sd card and sometimes the sd card files shows in my phone and sometimes doesn't .i did format the sd card through pc and the phone itself but still nothing happening. also when i see the files on SD card then i'm able to create or move some of my files into the sd card and after i get back to the sd card then the files disapear again and i have to unmount and mount it again and doing so sometimes works. i've thought maybe it's the sd card but i'm using an name brand (SANDISK) & i don't believe it's the sd card. Any help greatly appreciated.