@mekkaokereke @tarheel Mpesa, used in a few countries mostly in East Africa, is Electronic Money on mobile.
Across the African continent, Mobile Money (based on various mobile operators / MNOs - mobile operators - sometimes interoperable) is used a lot (See GSMA report here https://www.gsma.com/sotir/wp-content/uploads/2024/03/GSMA-SOTIR-2024_Report.pdf )
I use it to pay bills, groceries, airtime and internet...
MoMo is regulated by central banks, in a special category: example in UEMOA (West Africa) https://www.bceao.int/fr/content/etablissements-de-monnaie-electronique (in French)