Review on Amplim 32GB Micro SD Card 4 Pack with Adapter - Class 10 UHS-I U1 V10 High Speed Memory for Nintendo Switch, GoPro, Galaxy Phone, Camera and More by Rosa Dayoha

The cards worked fine while in the phone but as soon as I took them out they are unreadable and not recognized by any device. The first card, which I thought was a miss, happened on both cards though. Other cards from other manufacturers work fine on my device and in the adapter that came with it, so the problem seems to be that these cards don't work.