Staff of MTN’s Nigeria, during the launch of mobile number portability in Lagos, Nigeria, Monday, April 22, 2013. Mobile phone users in Nigeria can now keep their old number when switching services,... more 
Staff of MTN’s Nigeria, during the launch of mobile number portability in Lagos, Nigeria, Monday, April 22, 2013. Mobile phone users in Nigeria can now keep their old number when switching services, a major shakeup in the West African nation’s lucrative telecommunications market where customers often complain of poor service. The service, pushed by the federal Nigerian Communications Commission, began Monday across the nation of more than 160 million people. Under the service, customers can keep their number and can switch providers every 90 days for free. (AP Photo/Sunday Alamba) less 
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Associated Press | Photo By Sunday Alamba
Mon, Apr 22, 2013 1:39 PM EDT