Citycell Fnf number Add Delete Change & Check FnF

How to add, delete, change, remove or replace fnf in citycell sim?

 Add Number  
Type FnF Number and send to 1111
Example: 011XXXXXXXX and send sms to 1111

 Change FnF  
Type Change Old Number New Number and send sms to 1111
Example Change 011XXXXXXXX 011XXXXXXXXand send sms to 1111

 Check FnF  
Type View and send sms to 1111

See also:
Grameenphone How to Add Change Delete View FnF & Super FnF
Robi How to Add Change Delete View FnF & Super FnF
Banglalink How to Add Change Delete View FnF & Super FnF
Airtel How to Add Change Delete View FnF & Super FnF
Teletalk How to Add Change Delete View FnF & Super FnF