After installation, Amplim Extreme Speed 667X 100MB/s UHS-1 256GB MicroSDXC TF card worked perfectly in my Samsung Galaxy A 10 E Smartphone When I placed it in my phone's card slot and then looked at all the phones etc that it was advertised as compatible with, I concluded that it was a 'universal' fit. It didn't fit in the phone's SD slot. I had to adjust it and then press down a bit to keep it in place. Once I did that it stayed reliably in the trial and I was able to put the tray back into the phone. Once on the phone he behaved beautifully. I already save videos on it. Good luck to all buyers, Frank
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