I have two identical 64 gig microSD cards I bought three weeks ago. They both work fine in my Canon IXUS camera and they both work fine in my year-old M1 MacBook Air.
But only one works in my new Redmi 10C phone. The phone prompts me to format the other one.
I use the same USB C to USB A and USB A to microSD adapters on both. I've tried removing and re-inserting several times. I've swapped them from device to device several times. The same one consistently works on the laptop and camera and not the phone.
I have a hunch it may have been removed without ejecting. When I had Windows laptops they would prompt me to fix media that had not been ejected. I'm wondering if macOS does not do this. Perhaps because such media always uses a FAT format and not any Apple format, for maximum compatibility across devices. I don't have access to any devices at the moment besides these three.
Is there perhaps some way to get a more detailed technical diagnostic about what could be wrong with the microSD? Using either the phone or the Mac?