You can move media from internal phone storage to your SD card, easily remove the card to transfer content to other devices, view the storage space available, and erase all content to start fresh.
To move media to your SD card and free up your phone's internal storage:
Drag the SD card notification down, and touch Eject.
If you don't see the notification:
It's now safe to remove the card from the phone.
To insert the card into another device (computer, projector, etc.), you may need the adapter that came with your card. See device manufacturer's instructions for the type of adapter required and insertion instructions.