t-mobile Home Internet - Location Issue

This is how cellular internet works just like a cell phone. The local towers connect to a backend that could be a long distance from your physical location. As for YoutubeTV, you just update your location using your YoutubeTV mobile app and it will use the GPS of your smartphone to identify location. I assume you are trying to set the location on a streaming device so just follow the onscreen instructions that tell you to open the mobile app. I have both TMO Home internet and YoutubeTV and using the YoutubeTV mobile app to pinpoint location works fine.