allowed to change the PIN of the SIM card.
6.4.4 Password
Password visible: set to be visible when inputting password.
6.4.5 Credential storage
Use security credential: allow the Applications to visit the
security credentials and other credentials;
Install from the SD card: install the encrypted certificate;
Password setup: set or change credential storage password;
Delete the storage: delete the credential storage of all
contents and reset the password.
6.5 Applications
Unknown source: set to install the Applications from
non-electronic market or not;
Manage Applications: manage and delete the Applications
installed;
Running service: view and delete the Applications installed;
Development: set the development options of the
Applications.