Check your Airtel data balance effortlessly with USSD code, Airtel Thanks app, or by calling 121. Keep track of your data usage in real time. Learn how to check your Airtel balance , data, plan validity and other services using various methods like USSD codes, SMS, missed call and Airtel thanks app. Find the Airtel balance check number for different purposes and services. Airtel balance check can easily be done to find out details of your prepaid connection. The telecom operator will show you your current balance , remaining data allowance, and the validity of your existing recharge plan. If you have a smartphone, you can use two methods to check your balance , while feature phone users will only have access to one method to reliably check their balance . Check your Airtel balance easily with USSD codes, SMS, missed calls, Airtel Thanks app, and the website.