To update the Tubi app to the newest version on Android, please follow the steps below:

1. Go to your device's home screen.
2. Find and Tap on the Google Play Store.
3. Search for Tubi.
4. Select the Tubi app.
5. Tap on "Update" and you'll be all set. Please note that if you do not see an "Update" button and only see an "Open" option, the app is already on the newest version.

You can now access the updated version of the Tubi app on your device.

To turn on automatic app updates for all apps, follow the steps below:
1. Open the Google Play Store app.
2. Tap the menu button (three horizontal lines) in the upper left corner.
3. Tap Settings.
4. On the settings screen, tap Auto-update apps.
5. Select Auto-update apps over Wi-Fi only (recommended) or Auto-update apps at any time. Data charges may apply.