Why SIM Cards Are the Missing Link in Africa’s Financial Inclusion Revolution

The woman selling tomatoes at the roadside market does not need a bank branch. She does not even need mobile money in the abstract. She needs a SIM (Subscriber Identity Module) card in her hand because a SIM card is more than a piece of technology. It is a point of connection, the most fundamental way of being reachable in a connected economy.

Everything else, the transactions, the savings, the remittances, is built on top of that.

After years of overseeing several Airtel Uganda franchise operations across urban and rural markets, I have seen this firsthand. Mobile money has expanded access dramatically, yet financial inclusion remains constrained by infrastructure gaps, uneven coverage, and an incomplete ecosystem cycle that nobody is talking about loudly enough. And at the root of that gap is a simpler truth: you cannot use a mobile money account you cannot activate, and you cannot activate a SIM card no one nearby knows how to register.

The Transformation is Happening

Across Sub-Saharan Africa, mobile money has become one of the most important engines of financial inclusion. The World Bank reports that by 2022, Sub-Saharan Africa was home to all 12 economies where more adults had a mobile money account than a bank account, with 28 per cent of adults in the region holding a mobile money account, a remarkable shift in how people save, pay, and receive money (World Bank, 2019).

But that account is only ever as real as the SIM card underneath it. Mobile money fits the realities of everyday life better than formal banking products do. It works in informal markets, in low-income settings, and in communities where cash has long dominated daily commerce. It is not just a financial product; it is a practical economic infrastructure, and the SIM card is its foundation stone.

A SIM Card Is No Longer a Want, It Is A Basic Need

What is often missed in the financial inclusion conversation is how deeply embedded a registered SIM card has become in the institutional fabric of African life. To obtain a passport, a driving permit, or a national identity card, a SIM card is required. To enrol a child in school, to pay government fees, and to access public services, a SIM card is the gateway.

From my operational experience across multiple franchise branches, this SIM card foundation complements at least 90 per cent of all other businesses operating across the continent. When operations are properly structured, their return on investment exceeds 60 per cent annually. The business case is undeniable.

Yet the number of users and subscribers is not growing as fast as it should. The reason is structural.

The Incomplete Cycle Nobody Is Talking About

The mobile money ecosystem depends on a complete chain:

Network Coverage → SIM Cards → Subscribers → Agents → Aggregators, Distributors, and Franchise Partners

When one link in that chain is weak or missing, the entire system underperforms. And right now, the first link, network coverage, without which a SIM card is just a piece of plastic, remains the most critical gap.

Mobile money only works when mobile networks are up and running, and those networks only become meaningful when a person holds a SIM card. It is the SIM card that makes someone reachable, turning them into a connected participant in the digital economy. The GSMA’s Mobile Economy Africa 2026 report underscores that connectivity remains a defining issue for the region’s digital future (GSMA, 2026). Yet many communities still face weak, intermittent, or absent coverage, which means a person can hold a registered SIM card while the infrastructure to make it useful simply does not reach them.

I have witnessed this directly. A customer walks into one of our branches to send money to a family member upcountry. The transaction processes successfully on our end. But the recipient, someone with a SIM card and no signal, beyond the nearest network tower, waits. Sometimes for hours. Sometimes, until they travel to town. For rural families depending on remittances for school fees, medical emergencies, and daily survival, a failed or delayed transaction is not a minor inconvenience. It is a crisis.

The Cost of Distribution in Sparse Markets

One of the most overlooked dimensions of the last-mile problem is the cost of distribution. In areas with sparse agent networks, the cost of serving those agents rises significantly. A Distribution Sales Representative (DSR) responsible for delivering float to agents may spend thirty minutes travelling between one agent and the next. That is not just inefficiency; it is a structural barrier that makes rural agent operations economically unviable.

The solution is not simply to recruit more agents. It is to grow the base of people who hold a SIM card,  who are, by that fact alone, already a contact within the network. When more people in a community are registered and actively transacting, the economic incentive for entrepreneurial individuals to become mobile money agents naturally follows. A growing base of connected subscribers creates its own agent supply.

And when that happens, the same DSR, who once spent thirty minutes between stops, can now serve the next agent in two minutes. Distribution becomes cheaper. Agents become more viable. And the last mile gets shorter.

Expanding the Cycle Creates Employment and Tax Revenue

Completing the ecosystem cycle does not just serve communities; it builds economies.

Expanding network infrastructure creates new SIM registrations and new subscribers, who attract new agents, who generate new distribution opportunities, who create employment for telecom promoters registering those subscribers.

Each promoter, on average, can earn approximately USD 250 per month. Multiply that across hundreds of promoters in underserved regions, and you have a meaningful contribution to national tax bases and grassroots economic participation, an outcome that development finance institutions and governments should take seriously.

What Needs to Happen

Expanding network infrastructure into underserved areas must be treated as financial inclusion infrastructure, not merely as a telecommunications investment. Governments, telecommunications operators, and development finance institutions must collaborate to extend coverage aggressively into areas currently left behind, so that a SIM card in someone’s hand is backed by a signal strong enough to make that contact real. Shared tower agreements, subsidised rural deployment, and regulatory incentives can all help make this happen.

Consumer protection must also sit at the centre of this agenda. CGAP notes that digital financial service users face significant risks related to fraud, opaque pricing, and problem resolution (CGAP, 2026). If people do not feel safe using these services, they will retreat to cash even when digital options exist. Trust is not a soft issue. It is the foundation of usage, and it starts with a SIM card that reliably works as a real, reachable contact, not just an app.

Closing

The mobile money revolution has already proven it can transform economic participation for millions. But the cycle remains incomplete. Network coverage, SIM card access, subscriber growth, agent density, and distribution efficiency are not separate problems; they are one interconnected system.

The logic is simple, even if the execution is not. As long as there is network everywhere, we shall have a SIM card everywhere. And once we have a SIM card everywhere, the rest is a walk in the park: subscribers follow, agents follow, distribution follows, employment follows. Network coverage is not one input among many. It is the first domino.

Africa’s digital financial inclusion story will not be complete until that cycle is whole. What people need, at the root, is not an abstract financial product. It is a SIM card, because a SIM card is a contact, the smallest working unit of financial inclusion. Expanding network coverage into areas of zero connectivity is not a telecommunications problem. It is a financial inclusion imperative.

Financial inclusion is not a development metric. It is an act of economic justice. And economic justice does not stop where the network does.

 

By Derrick Sekiziyivu
Digital Frontiers Institute Alum
General Manager of Airtel Franchise Business at Keshwala Group

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(Article also shared on Digital Frontiers on 17 July 2026)