Airtel has introduced Voice SMS service. With this service Airtel customers can send Voice SMS to any mobile in Karnataka. To send voice SMS put ‘*’ before the number. For example to send voice SMS to 9845098450 dial *9845098450 & call. Now follow instructions to record your voice. You can record up to 30 sec & will be charged 75 paisa. Instructions to listen to this SMS will be automatically sent to that person. Listening for first time is free, if want to listen it again it will be charged 75 paisa/min.