There is a Weather APP virus attached to your coin ad's. I usually watch the 15-30 second adds then get my 3 coins and move on to the next. Yesterday there was a Weather App that would not let me get out of the game, even when I turned my phone off and re-started and went back to WWF. Since it would not get off the screen I did click " Install" at which point it froze my screen and changed all my apps on my screen. I had to go to US Cellular to get it fixed, I will no longer watch ad's to get free coins.