I have this card early February 2012, received, it worked perfectly, I was satisfied. Exactly nine months later reported my phone suddenly and without warning, that the SD card was removed unexpectedly - and so it was. Access to the card is neither a cell phone nor a card reader (tested with different adapters to different computers) possible - the card is simply "not available". All stored data is probably lost irretrievably. Too bad - hopefully an isolated incident.