Microsoft Lumia 540 - Use your Phone as an Xbox Controller

You can use your smartphone as an Xbox controller.

First, download and install the Xbox SmartGlass App (formerly known as My Xbox Live). Once this is installed go to Xbox hub and make sure your Xbox is turned on and connected to your Wi-Fi router. Then make sure the phone is connected to the same Wi-Fi network.

If that is all setup, then the App will sign you in and you can start controlling your Xbox with the phone.