The mobile phone has been a connecting technology of immense impact on human life. When the mobile device is used for financial transactions - buying, selling, or transferring, then you have m-commerce. And while many people lack access to banking, especially in the less prosperous markets, they do have mobile phones and are using them to improve their lives.
http://www.ericsson.com/m-commerce/
ConsumerLab study on m-commerce
The mobile phone brought a new dimension to the economic life of Sub-Saharan Africa. A new ConsumerLab report examines how this dynamic region is embracing a new generation of m-commerce services.