Review on High-Quality Samsung EVO Plus 512GB Micro SDXC Card with Adapter - Class 10 Performance by Rafael Lewis

I was hoping to use this to replace the current 400GB card in my phone. Tried copying files from the old card to the new one. I got a lot of copy errors and had to restart the process several times. Got about 10MB/s, nowhere near 90MB/s doesn't write, stated on box. In the end I gave up and went back to my old map. I'm considering returning this card if I can't find a use for it. I've generally been very happy with Samsung cards, but this is a real disappointment. I wonder if this is a fake.