This photo taken on September 8, 2016 in Windhoek, shows Namibian student Simon Petrus operating his selfmade phone at the NamPower National science fair. Enrolled at the Dr Abraham Iyambo school in Eenhana, Petrus has caught the world's attention by building a phone which has a cardboard box that can operate without the use of airtime. NCP Zuma (Non Creditable Phonee Zuma) is a labour of love that has taken him five years to build, and he is still modifying and working on it till this day. / AFP PHOTO / HILDEGARD TITUSHILDEGARD TITUS/AFP/Getty Images
