Use the Security settings to configure how to help secure your phone and its data. Tap Security to access the following settings:
ENCRYPTION
Encrypt device: Opens a screen that allows you to encrypt the device to keep it secure. After encryption, a PIN or password needs to be entered each time you power the phone on.
Enable storage encryption: Opens a screen that enables storage encryption and synchronization with previously encrypted data. You can encrypt the data stored on the device and on the microSD card.
SIM CARD LOCK
Set up SIM card lock: Opens a screen to set if you want to require a PIN to be able to access the SIM card. And, if set, allows you to change the PIN.
PASSWORDS
Password typing visible: Checkmark to briefly show each character of the password as you type so that you can see what you enter.
DEVICE ADMINISTRATION
Device administrators: Opens a page to view and/or deactivate device administrators.
Unknown sources: Checkmark to allow installation of non-Play Store applications.
CREDENTIAL STORAGE
Trusted credentials: Opens a screen to allow applications to access your phone’s encrypted store of secure certificates, related passwords and other credentials. The screen has a System tab and a User tab. Credential storage is used to establish some kinds of VPN and Wi-Fi connections. This setting is dimmed if you have not set a password to secure your credential storage.
Install from storage: Opens a screen to install a secure certificate from a microSD card.
Clear credentials: Opens a screen to delete all secure certificates and related credentials and erase the secure storage’s own password. You are prompted to confirm you want to clear this data.