a. You can use the rolled over data balance, if rolled over data balance is unavailable, you can conveniently buy a 4G Smartbyte of 50 GB, 20 GB and 10 GB. Click here to view the 4G Smartbyte details.
b. Simply dial *550# from your mobile and select 2 to activate a 4G Smartbyte.
c. You may also login to My Airtel App and activate 4G Smartbyte by going to Menu >> Plans & Payments >> Plan.