Google Stadia has had a rough launch, and since the day of its release, Google has been slowly releasing updates to the platform that they promised when Stadia was initially revealed.
Initially, you had to connect the Stadia controller to your Android device via USB cable. With a recent update to Stadia, you can use your Stadia controller with your Android device wirelessly. However, they both need to be connected to the same wireless network for this to work.
Though Stadia still does not seem like a completely polished off product that it should have been, the updates that are coming to the platform regularly will get it to that polished off point soon enough. With the increase in games being added to the platform, and Stadia State Sharing hitting beta, Google Stadia is becoming one heck of a platform.
Hopefully, Google continues to release updates to better the platform, and gain more users to the platform to increase the Stadia player base, especially for those games on the platform that do not support cross-play between platforms.