Matrix Sim cards have been amongst the good ones that I have used so far --- last month only I has used a matrix sim card for my travels to Dubai. All I had to do was call the Abhishek there, who usually completes my sales from their end. What I love about their services is that they have all the records updated and I don’t have to go through the paper work over and over again other than just one sign confirming the purchase. Atleast I can trust them with my details without worrying about them misusing the same. As expected, their services in Dubai were great! No issues with the network. It was a smooth ride once again. With matrix sims, its become very convenient for me to stay connected anywhere. Superb