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

Also a lot of other Sony phones have problems regarding these cards failing.

The following I count as just speculation as I can’t find any official statement by SanDisk regarding this problem.
I’ve also read somewhere that SanDisk is aware of these problems and even admitted that a faulty batch went on the market before noticing that there was an bug.

Next monday i’ll phone SanDisk and see what they have to say.
I see my data as lost in the meantime.