| purpose | sms syntax | details |
| to set new fnf | 019xxxxxxx | simply write desired fnf number and send to 3300. mobile number with country code (880 or +880) will also be accepted |
| to check existing fnf | ff | simply write ff and send to 3300 |
| to change existing fnf | 019xxxxxxx | write ch and send to 3300 |
| to remove existing fnf | rem | write rem and send to 3300 |
| for help | help | simply write help and send to 3300 |
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