Learn how to encrypt on your Samsung Galaxy S4 Active. The Security settings allow you to determine the security level for your phone.
Encryption
To require a numeric PIN or password to decrypt your phone each time you power it on or encrypt the data on your SD card each time it is connected:
- From the Home screen, tap Apps icon > Settings > More > Security.
- You must first set up a screen lock type if you havent already done so. For more information, refer to Lock Screen Settings
- Tap Encrypt device.
- Tap Encrypt external SD card to enable the encryption on SD card data that requires a password be entered each time the microSD card is connected.
Note: Make sure your battery is charged more than 80 percent. Encryption may take an hour or more.