This method to complete Twitch TV channel activation using your mobile device is quite handy and all it requires is your smartphone. Open the application on your smartphone and in the navigation bar, select the channels icon. Now select the STREAMING CHANNELS option from the channels tab to see all of the channels that are available to add on your Roku account. Long press on the channel to view the options and now you should select the ADD option before confirming it. So, these steps should be easy enough for you to complete the Twitch TV channel activation on Roku.
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