You can download the SelectTV mobile app on both Android and iOS devices.
How to install SelectTV mobile app on Android...
If you're using an Android smartphone or tablet, just visit the Google Play Store on that device and search "SelectTV".
Once the app is finished installing, just click "Open" and it should start loading SelectTV on your device. Eventually you'll be directed to the login page to log in and access your account through the SelectTV app.
How to install SelectTV mobile app on iOS...
On iPhone and iPad devices you can find it listed under SelectTV, in Apple app store.
After installing the app, you can log in with your registered SelectTV account to start exploring.