I am using idea sim in my 2g mobile.It is a company of Aditya Birla Group.In this sim card in 2g browsing is slow but downloading is so fast.It is the best network in 2g mobile phone in all over India.But pack of this sim is expensive.
Many people around me using Idea sim.This sim card provide us 50 mb for free in every month.So I will keep using this sim card.I am glad to using this sim.