Samsung Galaxy Tab S7 Manual page 134

Settings
Install unknown apps
You can allow installation of unknown third-party apps from selected apps or
sources.
1. From Settings, tap
2. Tap to allow installation from an app or source.
TIP Installing unknown third-party apps could make your device and personal
data more vulnerable to security risks.
Encrypt or decrypt SD card
You can encrypt your optional memory card (not included) to protect its data. This
only allows the SD card information to be accessed from your device with a
password.
1. From Settings, tap
2. Tap Encrypt SD card and follow the prompts to encrypt all data on your memory
card.
NOTE Performing a Factory data reset on your device prevents it from accessing
an encrypted SD card. Before initiating a Factory data reset, make sure to
decrypt the installed SD card first.
Decrypt SD card
You can decrypt an optional memory card (not included) if it was encrypted by this
device. You may want to decrypt the memory card if you plan to use it with another
device or before performing a Factory data reset.
1. From Settings, tap
2. Tap Decrypt SD card and follow the prompts to decrypt all data on your memory
card.
Biometrics and security > Install unknown apps.
Biometrics and security > Encrypt or decrypt SD card.
Biometrics and security > Decrypt SD card.
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