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Lock Screen and Security
Settings
Unknown Sources
Enable installation of non‑Google Play applications.
1. From a Home screen, tap
Apps
>
Settings
>
Lock screen and security
.
2. Tap
Unknown sources
to enable this option.
Warning
: Enabling installation of third‑party applications
can cause your device and personal data to be more
vulnerable to attacks by unknown sources.
Other Security Settings
Encryption
Require a numeric PIN or password to decrypt your
device each time you power it on.
1. From a Home screen, tap
Apps
>
Settings
>
Lock screen and security
.
2. Tap
Other security settings
>
Encrypt phone
and follow the prompts to encrypt all data on
your device.
SIM Card Lock
To prevent another person from using your SIM
card to make unauthorized calls or from accessing
information stored on your SIM card, you can protect
the information by using a PIN code.
When enabled, your device asks for a PIN number
each time you use the phone. Using this option you
can also change your SIM PIN number.
1. From a Home screen, tap
Apps
>
Settings
>
Lock screen and security
.
2. Tap
Other security settings
>
Set up SIM
card lock
.
3. Tap
Lock SIM card
to turn the feature on.
4. Tap
Change SIM card PIN
to create a new PIN.