If you have the Xbox mobile app you can check to see if your Xbox is on, and you can turn it on through the app, but ONLY if you are connected to the same network as your Xbox. If you are on different networks you won't be able to check because the app will not be able to connect to the console. I do think being able to check it from a source not on the same network would be neat but it could also lead to privacy breaches and, or data leakage.
If you have the Xbox mobile app you can check to see if your Xbox is on, and you can turn it on through the app, but ONLY if you are connected to the same network as your Xbox. If you are on different networks you won't be able to check because the app will not be able to connect to the console. I do think being able to check it from a source not on the same network would be neat but it could also lead to privacy breaches and, or data leakage.