Nigeria, Feb. 27 -- Wireless operator MTN Nigeria logged N1.1 trillion in post-tax profit for 2025 in breakaway from two years of sour fortune starting from 2023, during which stormy currency reforms in Nigeria hammered earnings and plunged balance sheet in red.

The return to profit drew big support from a 50 per cent tariff hike announced by the industry regulator last February to succour telcos after a much weaker naira dented operations.

Not only did that boost earnings, but it also powered the local unit of Johannesburg-based Africa's biggest mobile service provider, MTN Group, to a record N5.2 trillion revenue.

Data income continued to be the heartbeat of revenue as it solely accounted for more than half of turnover, which advance...