User's Manual

32
Managing Phone Security Settings
1. Select Settings > Security > Setup SIM/RUIM
card lock.
2. Enable Lock SIM card.
To disable this option you must enter your SIM lock
PIN.
3. Select Change SIM PIN. Enter the old pin and
select OK.
4. Enter the new PIN and re-enter the same value
when asked. Select OK.
Managing Credential Certificates
You can view, install, verify and manage the certicates
installed in your phone.
• Select Trusted Credentials to view and verify the
system and user certicates.
• Select Install from Storage to view and install new
user certicates.
Protecting your Phone from Harmful Applications
Some applications can harm your device. It is
recommended to verify apps in order to help prevent
harmful software from being installed on your device.
To prevent installation of application from unknown
sources, disable the option Unknown sources.
If you want to install applications from unknown sources,
enable Verify apps under Settings > Security, to verify if
the application is safe for installation.