The Missed Call Notification service is a valuable feature that ensures you never miss important calls, even when you are unable to answer due to being on another call or your phone being switched off. This service sends you a notification message containing the number of missed calls and the time of the call. To make use of this service, you can follow these activation and cancellation instructions: - Activate the service when the phone is switched off or out of coverage area: Dial **62*1720# to enable the Missed Call Notification service for situations when your phone is switched off or not within network coverage. - Activate the service when the line is busy: Dial **67*1720# to activate the Missed Call Notification service for instances when your line is busy with another call. - Divert all incoming calls to the Missed Call Notification service: Dial **21*1720# to divert all incoming calls to the Missed Call Notification service, ensuring you receive a notification for every missed call. - To cancel the Missed Call Notification service, simply dial #002##. Now, you may be wondering about the cost of this service. The good news is that the Missed Call Notification service is provided to you completely free of charge. There are no additional fees or charges associated with activating or using this service. You can enjoy the benefits of staying informed about missed calls without worrying about any costs. If you have any further questions or require assistance, our customer service team is available to provide the support you need.