Don't think we are quite there yet. #gpt4all seems to be the best open source llm software that can be run on CPU. Not sure what exists for stable diffusion or other image generation techniques though.
Discussion
There is a crazy install-python-as-an-app-dependency and run stable diffusion directly on Android but I don't know if it actually works.
Definitely the future though. Probably closer than many think. Will keep an eye out for any other projects and let you know if I see anything that may work with Android. 🤙