Does Roku have internal storage for pictures in the screen saver
I don't think so but you can use the mobile app to create a custom screensaver from photos on your phone.
@Chardy wrote:Does Roku have internal storage for pictures in the screen saver
No, Roku devices have no internal storage for anything except the channels themselves. For players with a USB port (the only current model with one is the Ultra), you can put image files on a USB stick and use that as a source for some screensavers, as well as playing videos or music from the stick.