FILE- In this file photo taken Tuesday, Nov. 17, 2015, cars drive past an MTN advertisement on the road in Lagos, Nigeria. MTN says Nigeria is slashing its massive fine by more than a third to $3.4 billion, and the CEO of the embattled Nigerian subsidiary of Africa's largest telecommunications giant is resigning. A statement Thursday, Dec. 3,2015, from the South African-based group announced major management changes to strengthen oversight and regulatory compliance across all 22 countries of its operations in Africa and the Middle East.(AP Photo/Sunday Alamba,File)