McDade TX
Got this for my Samsung 3.  After 4 months, was no longer accessible - first message I got on the phone was that there was an unformatted Sd card installed.  Next, it wouldn't even recognize the card was in there.  I inserted a different card, and the phone was able to recognize it and play music off it - - so, not the phone.  I also tried having my desktop read the card - - no go there either....