Cameroonian fintech company Diool has announced a $3.5 million seed round from existing angel investors and the Lundin Family.

Back in 2015, Diool started as a mobile recharge venture, offering small merchants a single app that enabled them to sell prepaid packages from several mobile network providers.

Eventually, the company added mobile money recharges (cash deposits and withdrawals) and payments, which quickly led to user and transaction volume growth (2,000 merchants and $1...