32GB Sandisk Micro SD suddenly stopped being recognized by Galaxy S3 phone

@gcatmap wrote:

 . . . the other it started unmounting and remounting until it was just gone with my data and needing reformatting - can’t reformat in phone, was about to try to reformat with my pc now and it thinks it’s a 30.2 MB card and won’t allow for a reformat.

 

Solution please!

Simple. Call SanDisk for a warranty replacement.