We advise you to always carry a printed version of your boarding pass.
Though many airlines accept paperless boarding passes, some airports do not have the infrastructure needed to analyze them. Stay on the safe side: make a printout copy of your boarding pass before reaching the airport. (In case you have no possibilities to print it at home, then please go to a local internet cafe or library. Please check if there are places that provide print services on your way to the airport.)
