ANGE KUMASI, BIRD STORY AGENCY WHEN David Kouamé decided to improve his literacy in his mother tongue, he went to the city centre in Abidjan not to register for tutoring services, but to buy a mobile phone. Kouamé had heard about a new, locally developed and assembled smartphone with a voice control system that can understand 50 African languages. "It is important to speak our African languages and teach them to our children. When I heard about this phone, I knew I had to get it. I'm very happy to have this superphone as I can speak my mother tongue…