Delete the data from your media card
To help protect your privacy, you can format your media card to permanently delete all of the data. Depending on the
amount of data, this process might take some time.
CAUTION: When you format your media card, you can't recover any of the deleted data.
Make sure that your device isn’t connected to a computer.
Swipe down from the top of the screen once using two fingers, or twice using one finger.
> Storage & USB.
Tap your media card.
Tap > Settings > Format.