Firstly, please note that we do not recommend playing this game on your mobile device.
However, if you decide to do so, please follow the next steps:
Open our service on your computer, launch the game from our library, and log in to your Steam account.
Once you are in the game, open its settings, select the "Gamepad" section, and enable the gamepad.
After that, you can launch a new Rage session on your mobile device without closing the current session (that is currently active on your computer). This way, the session will be transferred to a new device, and you will be able to play the game.