Learn how to encrypt your Samsung Galaxy S4 for security. 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 > Settings > More tab > Security.
You must first set up a screen lock type if you havent already done so.
Tap Encrypt device. For more information, read the displayed help screen.
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.
I am a freelance programmer and tech enthusiast. In my spare time, I contribute to this website.
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