Yes it is the best service providing company in India. The signal range never disappoints. I’m using Vodafone from more than 5 years but still I haven’t find anything better than this.
Minimum call drops. But you can’t ignore that it is more costly compared to other service providers.
Al last about billing, I am ex-worker of airtel billing dpt, I have compared all the terms in airtel and vodafone and vodafone gives you transparent service anyhow. So if you want to talk anywhere and anytime without any signal problem*Go For Vodafone*.