You can allow calls only to family members or other key phone numbers, and block all other phone numbers.
Select > Contacts and > SIM numbers > Fixed dialing numbers.
Not all SIMs support the fixed dialing service. You need your PIN2 code from your service provider.
|Turn fixed dialing on|
Select > Activate fixed dialing, then type in the PIN2 code.
Select the people to whom calls are allowed
Select > New SIM contact.
Type in the PIN2 code.
Write the contact name and phone number to which calls are allowed, then select .
To add a contact from the contacts list to the fixed dialing list, select > Add from Contacts and a contact.
To send a text message to a SIM contact while the fixed dialing service is active, you need to add the text message center number to the fixed dialing list.