The Roku app SHOULD find any Roku connected to the same local network the phone is using. Make sure you have your phone's wifi turned on and connected to your home wifi network, and that the Roku is also connected to that same network.
If you're trying to use the Roku app on your phone to set up a net connection on a Roku that is not already connected to that same net, it won't work.
If that's not what you're doing, check your router's settings. Some routers can be configured to keep separate devices from communicating with each other.
Roku Community Streaming Expert I am not a Roku employee, only a user like you. Please, no support questions via private message -- post them publicly to the Community where others may benefit as well. If this post solves your problem please help others find this answer by clicking "Accept as Solution.".
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MY Roku app on my iPhone never works! I have to refresh the network connection on the Roku so the app can see it. It works for a few hours then the app can’t find the Roku anymore. So then I have to do it again! I don’t think it's supposed to work that way!