Hi, I’ve had this microSD card for about a year now using it in my Galaxy S3 (Bell/Canadian version) and recently my phone freezes/locks up on boot up and forced me to factory reset my phone a few times. This post isn’t about my phone though, it’s about my sd card. Turns out the cause of the freeze/crash was due to my microsd card (I’ve since went out and bought a new/cheaper one which works flawlessly).
A most likely related issue/cause is that my microsd card wouldn’t let me format it anymore, it would always fail. Whenever I would copy/write files to my card, they would disappear within a few minutes and anything I deleted off the card would also return within those same few minutes. I was still able to read all the files I already had on there however as well as listen to all the songs I also had on there.
My guess is somehow, somewhere the card became write protected or something? Has anyone else come across this same issue?