They sold smartphones with projectors a few years ago. They were bulky and not very popular. One issue with current projector technology is keeping the image st

They sold smartphones with projectors a few years ago. They were bulky and not very popular. One issue with current projector technology is keeping the image straight. You also need a place to rest the device near the surface. Logistically it’s a pain. Future tech could improve this, but right now it’s not great.