How To Unmount Sd Card In Samsung M31. Scroll down the storage screen, and near the bottom, you'll find what we're looking for. Alternatively, tap all the way through to .

Go to settings > storage > click unmount sd card.
Scroll down the storage screen, and near the bottom, you'll find what we're looking for. Next, remove the sd card from your phone. Alternatively, tap all the way through to . Read the warning message and touch format sd card again.
