I tried a few games on my iPhone 4 earlier today. Absolutely impossible to play. Lag is terrible. Bullets cause lag, smoke causes lag, explosions cause lag. All of them together make the game unplayable. I'm usually on my iPad so I haven't noticed this before. If I would have down loaded the game now I would not have kept playing. When I started I played on the phone and it was good. Not any more. Just a heads up. My settings were all set to off also.