Samsung Galaxy Note 4 - Manual (Page 157)

Settings
157
Storage
View memory information for your device.
On the Settings screen, tap Storage.
Formatting a memory card permanently deletes all data from it.
The actual available capacity of the internal memory is less than the specified
capacity because the operating system and default apps occupy part of the memory.
The available capacity may change when you update the device.
Security
Change settings for securing the device and the SIM or USIM card.
On the Settings screen, tap Security.
• Device administrators: View device administrators installed on the device. You can allow
device administrators to apply new policies to the device.
• Unknown sources: Set the device to allow the installation of apps from unknown
sources.
• Verify apps: Set the device to check the apps for harmful content before installing them.
• Encrypt device: Set a password to encrypt data saved on the device. You must enter the
password each time you turn on the device.
Encrypting data may take more than an hour. Before encrypting data, connect the
charger to fully charge the battery and do not unplug it until data encryption is
complete.
• Encrypt external SD card: Set the device to encrypt files on a memory card.
If you reset your device to the factory defaults with this setting enabled, the device
will not be able to read your encrypted files. Disable this setting before resetting the
device.
• Remote controls: Set the device to allow control of your lost or stolen device remotely
via the Internet. To use this feature, you must sign in to your Samsung account.
• SIM change alert: Activate or deactivate the Find my mobile feature which helps locate
the device when lost or stolen.