Help & troubleshooting for channels on your Roku device, including adding/removing channels, logging in to, authenticating, or activating a channel, channel-specific playback issues, assistance contacting channel publishers to report issues, and adjusting channel-specific settings.
"Once signed up [via T-Mobile Tuesdays], you'll be able to watch baseball on your iOS or Android device, as well as on other streaming platforms such as Roku, Amazon Fire TV, Google Chromecast and on web browsers."
Frankly, I'm surprised. When Verzon had free streaming of NFL games being broadcast in one's area, it only worked for streaming on Verizon's phones.
Roku Streaming Stick +, 3810X, Ser YH0059427035, wifi - Samsung UN55ES6100
Roku Streaming Stick, 3600X, Ser 5S56D8240827, wifi - JVC EM37T