Allow calls only to certain numbers
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 dialling numbers .
Not all SIMs support the fixed dialling service. You need your PIN2 code from your service provider.
Select > Activate fixed dialling , then type in the PIN2 code.
Select the people to whom calls are allowed
-
Select
> New SIM contact . -
Type in the PIN2 code.
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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 dialling list, select
> Add from Contacts and a contact.
To send a text message to a SIM contact while the fixed dialling service is active, you need to add the text message centre number to the fixed dialling list.