Africell Sierra Leone started operations in 2005 and has grown to become the first operator with 75% market share by end of 2016. As with Africell Gambia, the secret recipe behind this success was a strategy of aggressive marketing and network roll-out. Aside from the growth in the subscriber base, Africell Sierra Leone's major success was in winning the hearts and minds of the people in record time and to become an inherent part of the Sierra Leonean society.

During the course of the last five years, Africell Sierra Leone has become the GSM operator with the highest growth both as a percentage of subscriber base and in terms of increase in number of subscribers reaching 3.4 million by end of 2016.

Africell Sierra Leone received the AWOL (All Works Of Life) award for "Telecoms Company of the year” in 2008 and 2009 and 2011.