Smartphones complement Kenya kids' education This year the number of smartphone users across the globe is expected to top 3 billion, little more than a decade after Apple's gamechanging iPhone first went on sale and transformed the way people interact with their phones. Imelda Mumbi uses her smartphone to complement her studies. For the 13-year-old who recently sat her primary school final exams, the Kenya Certificate of Primary Education (KCPE), the Eneza education application on her smartphone has become a key resource for advancing her studies. IMAGES AND SOUNDBITES