How do you set your own photos as a background, screensaver, or theme for a Roku tv? I found where it says it should be possible using the mobile app, but I can't find the settings to do so. Any help? Thank you.
You can only use the mobile screensaver functionality with 4K models (Unfortunately Roku doesnt state this anywhere).
1) Open the Roku Remote app on your phone/tablet
2) Select Devices then the 4K device
3) Select Cast/Screensaver/Choose pictures/Next/Set Screensaver/Ok