Many people have had trouble with the game crashing when they're playing in jetpack joyride. I have had the same trouble. I found a way to make it work again (a mistake I have made). If you go to my profile in the game, and you go down to the very bottom,(where it says S.A.M. notification) you can make sure it is turned off. I had put that on, and after a little while of that, my game started to crash. But when I turned it off, the game worked again. I hope that this has helped some of you who have trouble with the game.