I was going for an exchange program to learn music production in France and since i was travelling alone, my dad got me a post paid matrix sim card for France. Knowing that i am a total phone freak, my dad was glad that matrix offers an itemized billing for every cycle. I used the sim card for 3 monthd for my stay there and never had to call the customer care more than once and my billed amount always ranged between 4500/- tp 5500/- which was damn cheap with the way i called !! Matrix totally rocks !