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 problemGo For Vodafone.