How to control your call

Do you know that we can limit our SIM outgoing call only to certain numbers? yup it's true. Sometime we need to limit access for outgoing call made from SIM. Let me give you one example, let's say we give our children a mobile phone and SIM and we want to control to which numbers only they can make call. We can do this with Fixed Dialing Number (FDN).

With FDN we can control the destination number of outgoing call and as result we can control the bill as well :)

Inside the SIM there is a file named EF FDN (6F3B) wich contain records to store phone numbers. The number of records and capacity are following the SIM Phonebook records. Outgoing call can only be made to the listed numbers in these records.

To activate FDN you need to put PIN2 then you can start to store phone numbers. you can ask your operators for your PIN2.

Here are the steps to activate FDN. I am using Nokia 2626 menu as example :
- menu - setting - security - fixed dialing number - on
- put your PIN2
- then you can put phone numbers in the list