I had read all sorts of reviews for Matrix Sim Cards and mostly they weren’t great honestly. And when my office admin handed me one of their sim cards for germany, I wasn’t sure if this was the right choice especially for a work trip. I had all sorts of arguments with them saying what if the sim doesn’t work, what if the emails don’t work. But because it was given to me from my office, I had no choice but to use it. I have to admit, all my apprehensions dissolved once I started the using the sim card for all the needs, be it calls or emails or even using the data for connecting to the office server. So for all those misleading reviews, after my experience of using the matrix sim, I have to say its not anything that I read.