Nairobi, July 15 -- Airtel has lost 3.74 million customers on its mobile money service or 91.9 percent of the telco's cash transfer subscribers in the year to March, cementing M-Pesa's market share grip.

The Communications Authority of Kenya (CA) in its latest industry report shows that Airtel Money subscribers plunged to 329,660 customers at the end of March from 4.075 million in a similar period last year.

The fall in Airtel subscribers helped grow M-Pesa subscribers' market share to 98.8 per cent in March or 28.84 million users from 81.3 per cent a year ago. M-Pesa recorded a 10.6 per cent rise in customers to 28.842 million in the period under review from 26.066 million in March last year.

Airtel now holds 1.13 per cent of the mobile...