I am using Airtel for more than 4 years and it is the best cellular company in the market with no call drop, no weak signals.
Airtel doesn't make false claims, signal of Airtel never get disrupted. Airtel gives full signals even in basements while other companies network got failed, weakens.
Airtel netplans, call tariffs are also same as any other cellular network.In my opinion Airtel is the best cellular network in all over India.
