Portable storage: View memory usage for the different types of information stored on an optional installed memory card (not included).
•Mount: Prepare the memory card for use as storage in the tablet. This option is only available if a memory card is installed, and is not already mounted. Normally, your tablet mounts a memory card as soon as you install it.
•Unmount: Prepare an installed memory card for safe removal or formatting.
•Format: Permanently remove all content from an installed memory card. After formatting, the content cannot be retrieved.
Security Settings
This menu contains features that allow you to configure the tablet’s security parameters.
Device Administration
Some applications, such as Corporate email, may require you allow access to your tablet by device administrators in certain circumstances, such as if your tablet is lost or stolen.
These applications enforce remote or local device security policies. Some of the features a device administration application might control are:
●Setting the number of failed password attempts before the device is restored to factory settings.
●Automatically locking the device.
●Restoring factory settings on the device.
Device Administrators
1.From home, tap 
Apps > 
Settings > General.
2.Tap Security > Device administrators and then perform these steps:
Tap an account.
Review the device administration details for the account.
To remove administration from the account, tap Deactivate.
Unknown Sources
By default, you can only install apps from the Google Play store. When Unknown sources is enabled, you can install apps from other sources.
1.From home, tap 
Apps > 
Settings > General.
2.Tap Security > Unknown sources to enable the option.
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