When you have recently purchased a new sim card from Airtel, it can be difficult to remember your own mobile number. If you need your phone number in an emergency and cannot remember it, do not worry Your Airtel phone airtel number check will come in handy. When you have recently purchased a new sim card from Airtel, it can be difficult to remember your own mobile number. If you need your phone number in an emergency and cannot remember it, do not worry Your Airtel phone will come in handy.