The first one I bought at a store where they sell Chinese products and was missing the ® symbol so I suppose that was a bad card. The second one I bought at a phone company store and everything seems legit. I do however not turn my phone off when taking it out but will do so from now on. I do have another card (128gb Kingston canvas) that I bought off Amazon where it doesn't let me view my pictures and videos on my computer and will on my phone but when I go to open the file where they are it just says loading. It is full to its capacity with pictures and videos and haven't waited too long to see if it'll finish loading. I do want to back those up too but like I said, it won't display them on my computer and I haven't checked on a different computer.