I got myself an SD card from eBay (almost everything I get online is from eBay) for the S5, it was supposed to be a Samsung 32gb class 10. Got to my house, tried it, and pictures weren't loading. I would put songs in the card, and it would not show up. Thankfully I transferred everything from the sd card to my PC. So I messaged the guy told him what happened, and he said he was going to send me a new one, and this one "should work", almost like he knew that the 1st one he send was fake. The one he replaced it with, now works fine, and no complaints. Just have to be careful. Back everything up if you can.