Start by making educational engineering videos about smartphones, their components, and the fundamental sciences behind each component. Study, evolve, and develop the content to make it as engaging and sticky as possible. Hopefully this will inspire others to make similarly engaging content.
Build other content like hands on activities, lab experiments, DIY tutorials, and worksheets. Build Unity based interactive educational games that help explain engineering and science concepts.
Distribute and get feedback regarding the effectiveness of the content and curriculum.
Rinse and repeat with different sciences and fields of engineering.