I just tried this crap thing to get up and running, unfortunately, completely unsuccessful. I always get this message No SIM / Invalid SIM inserted. I have tried 4 different SIM cards from 3 suppliers, always the same game. Also, I'm assuming that I have received a customer returns because the package looks as if it was open in advance and no manual with was there. (Puzzle about 10 minutes, where the SIM ever comes in). The time was garnix going back ...