Hlo friends, I am using Vodafone sim. It has been given to a best offers of mine sim. In that data offers has been good 2G and 3G. All the data offers had been chosen from the available customer for the available price. The customer care has been call at any time it can give a response of mine. So the call cost of the sim has been reduced to the Vodafone company now. All the networks I have been used because one of the best one is I can choose i.e, VODAFONE. In any place I can travel the signal strength is good but some places are not connected to take a call because there are no tower. Overall I can find that Vodafone is the best network