Hello guys, I think this guide could help you. Main developers of the game and some users like me are investigating why it does not work for a lot of people.
https://pokemonrevolution.net/forum/viewtopic.php?f=121&t=16180
Follow it step by step, if you can't manage to make it work... By now, the only solution is flashing a custom ROM or different one. Cyanogenmod seems to work like a charm. Good luck! :Grin: