The document analyzes competition policy and determination of dominance in Nigeria's telecommunications market. It finds that in 2010, no single operator held a dominant position in the mobile or internet markets. However, in 2012 MTN Nigeria was found to have 44% market share in the mobile voice segment and was designated dominant, while MTN Nigeria and Globacom Nigeria were jointly dominant in the wholesale transmission market. As dominant operators, they are required to adhere to rules regarding accounting separation, equalizing on-net and off-net call rates, and reporting details. Some cases of violations of these requirements by MTN Nigeria were observed. The Federal Competition and Consumer Protection Commission awaits passage to regulate competition across sectors.