Question: how do i check my data bundle balance on airtel?
Answer: Open the phone app on your mobile device. . ...  Dial *121# and press the call button. Use the dial pad to dial the USSD code and press the green button to send the call. ...  Enter 5 and tap Send. 5 is the menu option to check your balance. ...  Enter 1 and tap Send. This displays your data balance.