I was going to USA for the first time in my life was quite frankly I didn’t know whether I should get a sim there or use my delhi number or just get an international sim card from India itself. SO as a backup I was carrying my delhi number but also got a matrix sim card since I had heard so much about them. Must say it was a very wise choice as not only is it cheaper, price wise, to others but also they are very helpful. There was not even a single day that I felt the need to use my delhi number. Their services were excellent and smooth J  Really appreciate the brand and advise everyone to use it when they travel.