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 SIM cards support the fixed dialing service. You need your PIN2 code from your service provider.

Activate fixed dialing

Select > Activate fixed dialing. Enter the PIN2 code.

Select the people to whom calls are allowed
  1. Select > New SIM contact.

  2. Enter the PIN2 code.

  3. Enter the contact name and phone number to which calls are allowed, and select .

    To add a contact from the contacts list to the fixed dialling 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.