My self used aircel Sim since 2012 to 2017. Few months back I ported my number from aircel to Vodafone. The reason why I took this Sim card is when I took this Sim card the company used to give good offers and later on they stopped it and the most important thing is about the network, network performance is very very poor it works in only major cities if you just cross out side of the city u will not get a single point.last year I visited to kerala for 1 week when I was there I didn’t get not even 1 point till I reached to bangalore And many times I complained to customer care support but nothing worked out and there is no 4G services. Even 3G also works in some particular places only not in all the places.