Review on KEXIN 64GB Micro SD Card Class 10, U3, MicroSDXC UHS-I C10 - High Speed Memory Card (3 Pack) by Flavio Iyer

So I've only had problems with these SD cards. I thought maybe these were the devices I used them on, but they weren't. They are read-only so I can't format them. and I can't get them to work with cameras because of them. Half the time, the camera doesn't even register that he's there. I replaced the SD cards with another brand I had and suddenly I had no more problems. By the time I resolved this issue, I was already past my return deadline by a few days. I do not recommend these.