Airtel India is the largest provider of mobile telephony and the second largest provider of fixed telephony in India and also a provider of broadband and subscription television services.
Now Airtel is giving 2GB 4G Data for 180 on Airtel 4G sim.
if your sim is not 4G then you can upgrade to 4G through
your nearest Airtel Store
here is step
Step: 1 Call 52122( it will automatically disconnect after one bell) .
wait for some minutes and after that you got a congratulation message that Congrats! You are 4G ready! You have been credited with Free 2GB 4G data, valid for 180 days.
Step: 2 Go to your Airtel sim setting and select LTE.
that’s it. Enjoy. . .