The best way to describe Matrix Sim Cards would be – good product, good experience.!! I used it for HongKong and to my surprise it was really good. I had some initial data setup issues which the customer support team were proactive and sorted it within a few hours of my call. Trust me i saved relatively more than my usual international bills which usually started with 10k!! And i was elated when i had to be half my usual bills. Thumbs Up!