Step 1: Get a new 4G Airtel SIM and you’ll automatically be eligible for double bonus data offer
Step 2: Kindly subscribe to your desired data plan after a successful response from their double bonus activation center
Step 3: Now, dial *141# to purchase any data plan of your choice using your 4G Airtel SIM card. Your purchased data, bonus data, 4G bonus data will all be given to you.
Step 4: Within 24 hours of purchase, kindly reverse the data by dialing *121*6#, select the amount of data you previously purchased that you want to reverse and then, your money will be restored back to you.
Step 5: Subscribe again with your reversed Airtime and use only the bonus data only. Keep repeating the process if you want more data.
The trick works well on both Airtel 3G and 4G SIM cards.