My Roku Streaming Stick came with a remote that has a Power Button at the top and with it you can turn the tv on and off, along with all the normal Roku functions. Very handy. The mobile Roku app for iOS does not have this Power Button so I cannot use my iPhone for this function. I've been told the mobile app only has a Power Button if you are using a Roku TV but that makes no sense as Roku includes a remote with the streaming stick that does have a working power button. I no longer use the app as I had to have the remote to turn the tv on so might just stick with the remote. At least it works but having the mobile app working on my iPhone would sure be nice.