I opt for this service because its network is all over the world where we go airtel is there.
I like its plans speed, data packs roamings packs etc, but its only disadvantage is the call rates are more and very expensive to manage and keep it recharged till now.Its network is very good no doubt for it if company is taking more money from us they are proving the best quality as well I dont get an disputes regarding billing all is good in this network because I pay via paytm service centres or other places