FAQ for SmartGlass it does not yet seem like it can change channels. You would therefore need the controller.
[quote user="SmartGlass FAQ"]
Q: Why can’t I see the OneGuide within SmartGlass?
A: Xbox One SmartGlass supports the ability to control your TV’s volume as well as pause/skip live TV/DVR content. We're excited about the SmartGlass features available at launch and look forward to bringing more amazing SmartGlass features to our customers
in the future, including OneGuide and universal remote support.
Q: When will OneGuide be available on SmartGlass?
A: We are excited to bring additional features and functionality to SmartGlass in the future, but have nothing specific to announce at this time.
Xbox Forums moderator. Xbox MVP. r/xboxinsiders moderator. Twitter: @13mxn
Did this solve your problem?
Sorry this didn't help.
Great! Thanks for marking this as the answer.
How satisfied are you with this reply?
Thanks for your feedback, it helps us improve the site.