It's incredible the number of Internet professional in Africa are using mobile data (via telecom voice/data networks) primarily for their work, except for a fortunate fraction who have traditional employment and fast Internet is provided, and those who can afford broadband connectivity (e.g., cablemodem) for their homes.
Additionally, with unreliable power (either cut during the frequent scheduled maintenance periods, or off due to unscheduled disruptions), it doesn't matter how fast and reliable internet access is. Cablemodems don't work without power. Laptops and phones don't take long to run out of sufficient power from the battery.
When that happens, there's a common saying -- This is Africa.