Vodafone is one of the leading company in india.vodafone mobile operator is known for its strong network.I using vodafone for long time and its good mobile operator and I am sure it dont disappoint you in terms of network strength.so here is my experience.
Vodafone all Network is very strong around india.Network is available in all city, villages etc.But when comes in its 4g catoegary it network is not that great because 4g network is not build in small city.the network range is good in metro, excellent in big city but in small city 4g network is not available.Vodafone customer care service is very good and they very quick respond to your call.solves your problem in least time.Vodafone internet speed is very fast as 2g and 3g around 2 to 3 mbps but 4g speed is not that great because 4g is new.Vodafone call quality is good and hardly sometime problem of connectivity occurs which is same for all mobile operators.
Here is also The main disappintment is its cost.vodafone is very costly mobile operating service.The net speed is good but netpacks( 2g, 3g, 4g) are very very costly and not affordable to everyone.vodafone callrate, message packs are also costly as compared to other operator.bodafone does not gives that many offers for internet so it is b8g letdown.
So from my experience vodafone is not everyones cup of tea.if you have to buy sim for strong network and only for calling then vodafone is best choice but it is very costly for internet.