What kind of average family is buying an $80 cellphone? The majority are still going to use cheap used phones shipped in from the EU, or discarded by the richer members of their society.

I'm assuming that most of the people in Kenya buying a smart phone are going to be on the upper end of the income distribution.

The majority are using features phones(from edge-bluetooth-o.x-MP-camera to basic call-&text) manufactured by Nokia, samsung, lg,SE and Shenzhen. People rarely acquire phones discarded from the richer.