Question USB card reader not working

[wall_]

Hi, I bought a cheap USB Type C microSD card reader and it works great on the computer, but I was only able to get it to work on my S22 once, and another person's S9 Plus also once.
The card is formatted in FAT32 so I know it works on Android (and it did, once..), the phones just aren't detecting/doing anything...

 

[gernerttl]

Hi, I bought a cheap USB Type C microSD card reader and it works great on the computer, but I was only able to get it to work on my S22 once, and another person's S9 Plus also once.
The card is formatted in FAT32 so I know it works on Android (and it did, once..), the phones just aren't detecting/doing anything...

Save your data on the card and format it as exFAT.

 

[cash2phone]

It's possible that the cheap USB Type C microSD card reader you purchased may not be fully compatible with your mobile devices. While it works fine on your computer, mobile devices can have stricter compatibility requirements.