Originally Posted by hammadyi
have you tried rebooting into safe mode? And is your phone even compatible with the 64 GB card? look for the phone supported sd cards in your phone's specs
Originally Posted by rzr86
probably if you format the card from windows you will have success but i am not sure
if you do it format it to fat32 system
Formatting a 64GB card with any ROM will do the trick. Don't worry, it's compatible.
Happy to help.