(170510) -- NAIROBI, May 10, 2017(Xinhua) -- A man uses Tecno mobile phone in downtown Nairobi, capital of Kenya, May 9, 2017. Chinese mobile phone manufacturer Tecno Mobile sales reached 25 million devices, including 9 million smartphones in 2015, helping it to sustain the most "popular" brand status in Africa. (Xinhua/Sun Ruibo)
