Mike Adenuga, Nigeria’s second richest man and one of the richest black people in the world, has investments in mobile telecom. Forbes has estimated his net worth at $4.6 billion as of March 2013 which makes him second wealthiest Nigerian behind Aliko Dangote.
In 2003, he founded Globacom Limited (or GLO) a Nigerian multinational telecommunications company headquartered in Lagos, Nigeria.
GLO is a privately owned telecommunications carrier that started operations on 29 August 2003. It currently operates in four countries in West Africa, namely Nigeria, Republic of Benin, Ghana and Côte d’Ivoire, which has more than 27 million subscribers in Nigeria, making it the second largest mobile phone network in the country after MTN.