
Sony Ericsson Mugua
Find "Restrict calls"
Press the Navigation key.
Scroll to Settings and press the Navigation key.
Press Navigation key right to find Calls.
Scroll to Manage calls and press the Navigation key.
Scroll to Restrict calls and press the Navigation key.
Change barring password
Scroll to Change password and press the Navigation key.
Key in your current barring password (default is 1919) and press the Navigation key.
Key in the required barring password and press the Navigation key.
Key in the barring password again and press the Navigation key.
Exit
Press Disconnect to return to standby mode.