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Unknown Sources
Enable installation of non‑Google Play applications.
1. From a Home screen, tap
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
Lock screen and security.
2. Tap Other security settings > Encrypt phone
and follow the prompts to encrypt all data on
your device.
Settings
Apps >
Apps >
167
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
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.
Apps >
Lock Screen and Security
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