Smartphone Learning

Hi Folks,

I attended the NYT Schools for the Future conference thanks to the Center for Teaching quality this Thurs. I met an educator there who wanted to know,

What kinds of teaching/learning is possible/being done, with smartphones. He is a headmaster of a private school serving a variety of SES students including high poverty.

Has anyone had success using smartphones as a learning/teaching tool and if so how? If anyone has links to examples I would love to see them. I told him I would access out network to answer his question.

Thanks you awesome people.