Please contact Gemmy Customer Service for tech support and step by step instructions, 1-800-274-6717.
You use a smartphone app. The message can be all text, text mixed with very low-res graphics, or you can choose some canned images or canned greetings. The app works fine once you use the correct one, not the one in the instructions. But the projector puts out so little light that you may have trouble seeing what you display. And the display window is small, shows only two or three letters at a time, really too small a scrolling window.