Samsung SM-S975LZKATFN - Manual (Page 390)

Security
The Security settings allow you to determine the security level for
your device.
Encrypt Device
When enabled, this feature requires a numeric PIN or password to
decrypt your device each time you power it on or encrypt the data on
your SD card each time it is connected:
1. From the Home screen, press and then tap Settings ➔
(More tab) ➔ Security.
2. Tap Encrypt device. For more information, read the displayed
help screen.
3. 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.
Tip: Make sure your battery is charged more than 80 percent.
Encryption may take an hour or more.
Factory data reset password
Create or change a password required by users to access the factory
reset functionality.
1. From the main Settings page, tap More tab ➔ Security.
2. Tap Set up/change password.
3. Follow the on-screen prompts to either create a new password
or change an existing one.
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