Formatting a microSD card permanently removes all of the files stored on the card.
From the Home screen, tap
.Tap Unmount SD card to release the microSD card from device use. An icon appears within the Notifications panel to indicate an unmounted microSD card.
Once released, tap
.Once completely formatted, the card is automatically re-mounted (reconnected for use by the device).
The formatting procedure erases all of the data on the microSD card, after which the files CANNOT be retrieved. To prevent the loss of important data, please check (and backup, if necessary) the contents before you format the card.
When you connect the phone and PC using a USB Cable and set your device’s USB connection mode to media sync or camera mode, you will see portable device for MTP or imaging device for PTP on the PC. You can copy files to/from the microSD card.