1. Press
>
2. Select the Lock SIM card check box.
3. Enter your SIM PIN and tap OK.
To change the SIM PIN:
1. Press
>
2. Enter your current SIM PIN and tap OK.
3. Enter a new SIM PIN, tap OK, re-enter the new SIM PIN, and tap OK.
Make Passwords Visible
You can hide your password or PIN as you type it.
1. Press
>
2. Clear the Make passwords visible check box.
Reset Password
Set or change the password for performing device reset and factory data reset. See
Reset
and
Factory Data
1. Press
>
2. Enter your password and tap Continue.
3. Enter your new password and tap Continue.
4. Confirm your new password and tap OK.
Device Administrators
You can enable or disable the authority to be a device administrator of certain applications. If
disabled, you will typically lose some functionality in those applications such as the ability to
sync new email or calendar events to your phone.
1. Press
>
2. Tap an application you want to enable or disable the authority to be a device
administrator of and then tap Activate or Deactivate.
Unknown Sources
Follow the steps below to allow installation of non-Play Store applications.
1. Press
>
Settings
> Settings
> Security > Set up SIM card lock.
> Settings
> Security > Set up SIM card lock > Change SIM PIN.
> Settings
> Security.
Reset. The default value is 0000.
> Settings
> Security > Reset password.
> Settings
> Security > Device administrators.
> Settings
> Security.
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Device