I switched to vodafone last year and I donot regret for it.Their offers are at best prices.Their service and plans are much much better than airtel.Even the 4G is at its fastest speed.Though it is a foreign brand working in India it has atractive offers.Its 1 hour unlimited 4G comes at Rs16 and is much beneficial.once the pack is recharged it activates immediately and even if we reharge unknowingly the same pack for the 2nd time it gives us infomation tha we have already ativatedthe net pack.Only the customer service is dissapointing .It takes much time to reach them.otherwise the operator is best.Now I am using Rs149 pack 1Gb/day with 70 days validity unlimited messaging and free vodafone to vodafone calling all over india.Thanks for the cheapest pack vodafone .