It seems like I was wrong about the platform support, but in fact some OEMs like Samsung have disabled it. https://www.androidauthority.com/using-microsd-card-

It seems like I was wrong about the platform support, but in fact some OEMs like Samsung have disabled it. https://www.androidauthority.com/using-microsd-card-android-3362538/ https://www.androidauthority.com/using-microsd-card-android-... Most of the budget / midrange devices likely to have SD card slots do support it though.