Vodafone, no need to talk about the network of Vodafone in India each & every village they have covered with there network. I am using Vodafone service from 2006, from last 10 years. I am one of the full satisfied customers of Vodafone.
If we talk about the offer they have on recharge nobody is giving now. for ex- Vodafone giving unlimited talktime to all mobile, landline & STD call+ 1 GB data per day only @ 349/-. its unbelievable offer. you can talk unlimited & use data unlimited. customer service is also good & you will get Vodafone store any where if you have problems.