The Asus ROG phone has a pressure-sensitive chassis with active sensors on the lower left and right sides, and the upper-right side. In vertical orientation, pressing the lower left and right sides of the chassis simultaneously enables the X-mode, which optimises game-data processing performance and frees up the RAM to dedicate more resources to the game. Unlike in the vertical mode, when you hold the phone horizontally, the pressure sensors on the sides of the chassis (named Air Triggers) can be assigned dedicated actions in any game to improve the gaming experience. For example, in Asphalt 9: Legends, the left air trigger can be assigned the role of firing up the Nitro, and the right air trigger of changing lanes. This way, with speed boost and steering set to automatic, you can play the game without having to touch the screen.