Airtel is known for its high speeds in Internet and providing after services.
I have downloaded My airtel app on my moto g3 and its showing all my datat balances Whether its of my broadband or my 4g in one place.
But when you compare the speeds b/w Airtel 3g and 4g, there is no much difference as per the advertisements.
I personally cant tell the difference b/w spees of 3g and 4g.
I only get 1-2 MBps whether in 3g or 4g