Check your Airtel balances with quick codes (ussd codes)
Enter the following codes as you would dial a phone number into your phone and hit dial, a sms like message will be returned with the requested information free of charge.
Dial to check available :
Balance : *123#
Data : *123*11#
SMS/Text : *123*2#
Validity : *121#
A simple tip to make this easier in the future is to set a contact in your phone for example Airtel and save each of the necessary codes as a phone number like the example screenshot below. So when you need to check a certain balance all you need to do is hit dial on the respective code/number.
(click image to enlarge)