Device Lock Management

Enabling Device Lock:

1. While viewing the home screen, tap the "All Apps" icon
2. Tap "Settings"
3. Scroll to "Personal" and then tap "Security"
4. Tap "Set up screen lock" and select the desired screen locking method
5. Follow the on-screen instructions for "Pattern", "PIN" or "Password" locking methods

Disabling Device Lock:

1. Tap "All Apps" > "Settings" > "Security"
2. Tap "Set up screen lock" and then select "None" from the list
3. If necessary, enter the current patter, PIN or password to confirm the changes

Changing the Deice Lock Password / PIN:

1. While on the home screen, tap "All apps"
2. Tap "Settings"
3. Under "Personal", tap "Security"
4. Scroll to and tap "Activate Phone Code"
5. Tap "Change phone code"
6. Type in the old password, then tap "OK"
7. Enter the new password and press "OK"
8. Re-enter the new password for confirmation, and then press "OK" once more

SIM PIN Management

Enabling SIM PIN:

1. From any of the home screens, tap "All Apps"
2. Tap "Settings"
3. Scroll down to "Personal" and tap "Security"
4. Under "SIM card lock", tap "Set up SIM card lock"
5. Tap "Lock SIM card"
6. Enter the password (usually "1234" or "0000") in the "Lock SIM Card" screen
7. Once complete, you should see the following settings on-screen:
   
   • Lock SIM Card - Require PIN to use phone – this option should be checked
   • Change SIM PIN – this option should be enabled

Disabling SIM PIN:

1. Tap "All Apps" on the home screen
2. Tap "Settings" > "Security "> "Set up SIM card lock" > "Lock SIM Card"
3. Enter the password ("1234" or "0000" by default) in the "Unlock SIM Card" screen. (Note: this time it's in the "Unlock" section, not "Lock"
4. Once the setup is complete, you should see the following settings:
   
   • Lock SIM Card - Do not require PIN to use phone – this check box should be cleared
   • Change SIM PIN – should be disabled / grayed-out

Changing the SIM PIN:

1. Tap the "All apps" icon located on the home screen
2. Tap "Settings"
3. Under "Personal", tap "Security"
4. Tap "Set up SIM card lock" > "Lock SIM card"
5. Enter the password (either "1234" or "0000" by default) in the "Lock SIM Card" screen
6. Press "Change SIM PIN"
7. Enter the current SIM PIN (default is either "1234" or "0000")
8. Type in the new SIM PIN twice
9. The message "PIN changed successfully" should appear on screen

PUK Code Management

In case you have entered your PIN code incorrectly for several times in a row, your smartphone will lock your SIM card and prevent you from attempting again, until you provide a PUK code.

Related Errors:

• "PIN code blocked. Enter PUK code:"
• "Enter PUK code"
• "SIM card locked. Emergency calls only. Please contact Customer Care"

To unlock the SIM card:

1. Contact your carrier's customer service and request for your PUK code
2. Enter the PUK code and tap "OK"
3. Type in the new PIN and press "OK"
4. Re-enter the new PIN for confirmation, and press "OK" once more