Infrastructure Deep Dive — 2026 Edition
USSD in Africa: Why 960M Users Are Unreachable by Apps — and How to Build for Them
USSD isn't legacy tech. It's Africa's most undervalued digital infrastructure — processing trillions in mobile money, connecting farmers to markets, and serving as the only channel that reaches 100% of the addressable market at zero data cost to the user.
The Paradox
The Coverage Gap Closed. The Usage Gap Exploded. USSD Bridges Both.
The coverage gap — people without any mobile broadband — dropped from 41% to 9% between 2015 and 2024. But 960 million Africans (64% of the population) live within broadband coverage and still aren't connected to the internet. The barrier isn't towers. It's economics.
Handset Shipments: Africa 2025
45% of all new handsets entering African markets cannot run apps. USSD and SMS are the only programmable channels.
Cost of 1GB Data (% Monthly Income)
The UN target is 2%. Africa averages 9%. At US income levels, this would be $443/month for 1GB.
Why Smartphone Owners Still Dial *123#
USSD usage isn't limited to feature phones. Smartphone owners across Africa regularly use USSD as a deliberate data cost avoidance strategy. Because USSD runs on GSM signaling channels (SS7) rather than TCP/IP, it consumes zero bytes of mobile data. A user with a completely depleted data balance can still execute a financial transfer, check a bank balance, or register for a service.
Fintech companies architect their platforms to anticipate data drop-offs, caching locally and relying on USSD as the always-available fallback. This isn't a compromise — it's by design.
2G Outlives 3G: The Network Migration Reality
Operators are retiring 3G networks faster than 2G. Because 2G infrastructure costs far less to maintain and offers wider geographic propagation for voice and SS7 signaling, it remains the baseline. Projections show 243 million 2G subscriptions still active in SSA by 2031, while 3G drops to 89 million. USSD, which requires only a 2G signaling connection, is fundamentally insulated against 3G obsolescence.
Key Insight
USSD transactions grew 20% year-over-year into 2025. The protocol isn't dying — it's expanding. The channel that everyone dismisses as legacy is actively growing faster than many app-based alternatives.
Use Cases
USSD Beyond Betting: The Full Application Landscape
USSD isn't just for mobile money top-ups and sports betting. By 2025, it orchestrates financial inclusion, agricultural supply chains, healthcare delivery, civic engagement, education, and enterprise data collection across the continent.
Financial Services: The $1.1 Trillion Layer
Global mobile money hit $1.105 trillion in transaction value in 2024, with SSA accounting for 53% of the world's 1.1 billion registered accounts. Ghana alone processed GHS 3.6 trillion in mobile money in the first 10 months of 2025. USSD powers six core financial workflows:
- Payments & transfers: P2P, merchant payments ($105B globally in 2024), utility bills
- Savings: Airtel Money's "Village Banking" in Zambia manages community savings groups entirely via USSD menus
- Algorithmic lending: Companies like Branch use USSD gateways for frictionless loan origination without apps
- Micro-insurance: ACRE Africa covers 1.7M smallholder farmers via USSD-driven premium collection
- KYC & account management: NearPays in Nigeria enables fully compliant bank account creation via USSD for farmers in Kaduna State
- Cross-border payments: MTN MoMo Zambia now sends funds to EU, UK, and Canadian bank accounts via USSD for ZMK 5 ($0.25)
Agriculture, Water, Education, and Civic Services
- eFama (South Africa): Connects 5,000 rural farmers to Johannesburg wholesale buyers via USSD. Bypasses middlemen who extracted 40% margins. Result: 30% income increase in year one.
- TapGives (Kenya): USSD-based clean water subscription. Villagers dial a shortcode to subscribe, pay, and authorise daily water collection. Admins manage logistics via a synced web dashboard.
- Zydii (Kenya): B2B workforce training platform delivering bite-sized skills via USSD/SMS — no corporate broadband required.
- Ghana Ministry of Health: Managed nationwide COVID-19 vaccination registration via USSD codes.
- Radio Africa Group: Uses shared shortcodes for interactive polling, surveys, and real-time feedback collection — data ingested into CRM systems via webhooks.
The Data Collection Angle
Every USSD interaction generates structured data — survey responses, registration forms, transaction records, feedback scores. Businesses route this through API aggregator webhooks into CRMs, dashboards, and Excel exports. Feature phone users become data sources with the same analytical granularity as web traffic.
Our USSD Fabric handles all of these use cases from a single multi-tenant platform — betting, surveys, forms, data collection, service delivery. Build the journey in our UI, we handle the telco infrastructure, session management, and data export to your tools (Excel, Slack, email, CRM). See the product.
Infrastructure
What It Actually Costs to Build on USSD
The user experience is frictionless — dial *123# and press send. The infrastructure underneath is expensive, fragmented, and technically unforgiving.
Shortcode Provisioning: Costs and Timelines by Market
| Market | Setup & Regulatory Fees | Monthly / Per-Session | Approval Timeline |
|---|---|---|---|
| Kenya (Safaricom) | KES 34,800 setup + KES 34,800 deposit. Vanity: KES 232,000 | KES 34,800/month + KES 1/session | 1-2 weeks |
| Nigeria (MTN/NCC) | NGN 200,000 ($145) + VAT | NGN 70,000/month + variable carrier fees | Highly variable (NCC alignment) |
| Ghana (MTN) | Volume-based tiered pricing | GHS 1,575 flat for <150K sessions. GHS 0.0105 above | NCA compliance dependent |
| Tanzania (Vodacom/Airtel) | $2,000 TCRA + TZS 1.6M aggregator. Airtel: $2,000 | $3,000 TCRA + TZS 3M Airtel + TZS 1.6M aggregator | 2-10 weeks |
| Zambia (MTN/Airtel) | KYC submission (aggregated) | Shared: ZMW 6,000/month. Dedicated: ZMW 10,000. ZMW 0.06/session | Immediate (shared codes) |
| DRC (Vodacom/Orange) | Direct negotiation | CDF 570,000/month per operator | Highly variable |
Technical Constraints: The Engineering Reality
- 160-character screen limit: Best practice ceiling for cross-device compatibility. Every character counts — including navigation prompts and whitespace.
- 180-second session cap: Maximum total session duration. Safaricom drops sessions after 30 seconds of inactivity. Airtel allows 60 seconds.
- Stateless protocol: The network doesn't remember anything. Developers must maintain session state server-side using Redis or MongoDB, mapping sessionId to user progress.
- Rural latency: 250ms signaling latency (vs 150ms urban) causing 1.5% session failure rate — 3x the urban rate. During peak traffic, rural infrastructure hits 125% of designed TPS capacity.
Why Businesses Use Aggregators Instead
The costs and complexity above explain why most businesses bypass direct telco integration. API aggregators like Africa's Talking and Arkesel negotiate bulk connections, absorb regulatory fees, and offer developers clean REST APIs with shared shortcodes. MTN's MoMo Open API alone hosts 24,000+ developers and 1,600 live production partners across 16 markets.
Skip the telco infrastructure entirely
Our USSD Fabric handles shortcode provisioning, session state management, carrier routing, and timeout recovery across all 7 markets. You build the journey in a UI — we handle the plumbing.
Channel Strategy
USSD vs WhatsApp vs Native Apps: The Economics
The answer isn't one or the other. It's a hybrid — but understanding the unit economics determines which channel does what.
| Criteria | USSD | WhatsApp Business API | Native App |
|---|---|---|---|
| Market Reach | Near-universal (all phones) | Smartphones with data only | Smartphones with data + storage |
| User Data Cost | Zero (runs on SS7 signaling) | Requires active data connection | Heavy downloads + background data |
| Enterprise Cost | Fixed telco setup + micro per-session | $0.0040-$0.0225 per message (Meta pricing) | Massive CapEx + cloud OpEx |
| Deployment Speed | Days/weeks (server-side updates) | Fast (API/webhook integration) | Months (App Store approvals) |
| UX | Text-based, 160 chars, functional | Conversational, rich media, location | Immersive, biometric, push notifications |
| Updates | Instant (server-side, no user action) | Instant (server-side) | Requires user to download update |
The Hybrid Playbook
The consensus among operators scaling in Africa: USSD is the acquisition engine. It captures the vast rural and low-income demographics while serving as a failover for urban smartphone users during data outages. Once a user is acquired and authenticated via USSD, the platform incrementally migrates high-value users to the app or WhatsApp for richer interactions — often triggered by an automated SMS with a download link from within the USSD session.
WhatsApp's per-message fees ($0.0040 for utility messages) compound rapidly for high-frequency micro-transactions. For a microfinance platform sending daily balance alerts and repayment reminders, USSD's fixed-cost model is dramatically cheaper at scale.
The WhatsApp Trap
WhatsApp requires internet. USSD doesn't. When connectivity drops — and in rural Africa it drops constantly — WhatsApp-only platforms lose their entire user base. USSD maintains service continuity regardless of data availability. That's not a nice-to-have. It's the difference between a platform that works everywhere and one that works sometimes.
The Opportunity
USSD-as-a-Service: Africa's Most Undervalued Infrastructure Play
The mobile money market alone is valued at $951M in 2025, projected to hit $4.32B by 2034. The platforms that abstract the USSD infrastructure pain are commanding the highest valuations.
From Gateway to Platform
API aggregators have evolved beyond simple connectivity. Platforms like Arkesel now offer multi-level menu APIs that let non-technical businesses visually design USSD flows — loan applications, insurance enrollment, survey collection — while the platform handles session persistence, timeout recovery, carrier routing, and zero-data rating in the background.
What VCs Are Actually Funding
Over 140 VC funds are active in Africa in 2025, with local participation surging to 40% of funding share (up from 25% in 2024). The investment thesis has shifted from high-burn consumer apps to offline-first infrastructure with clear unit economics. Startups deploying USSD to digitise analog supply chains with sub-20% monthly burn rates are heavily favoured over app-heavy plays with expensive acquisition costs.
USSD is no longer viewed as legacy tech by institutional investors. It's recognised as infrastructure-grade opportunity — capable of monopolising transaction flows across the unbanked and underbanked demographics.
The Multi-Tenant Platform Opportunity
The real value isn't in building one USSD app. It's in building the platform that lets any business deploy USSD services without touching telco infrastructure. A betting operator, a microfinance institution, a government health department, and a logistics company — all running on the same multi-tenant USSD fabric, each with their own journeys, their own data, and their own integrations.
This is exactly what we built. Our USSD Fabric is a multi-tenant, multi-industry platform: config-driven journey builder, telco abstraction across 7 markets, session state management, and data connectors to Excel, Slack, email, and CRM systems. One platform. Any use case. No infrastructure dirty work. See how it works.
What's Next
Emerging Trends: AI, Cross-Border, and Regulatory Mandates
USSD isn't fading. It's being supercharged by AI, breaking geographical boundaries, and getting mandated by regulators.
AI-Powered Session Management
Agricultural startup KilimoNova integrated Amazon Bedrock's Nova-Micro LLM to manage USSD session states in high-latency rural environments. The LLM "remembers" previous interactions across broken sessions — a specific insecticide recommended on an earlier disconnected screen gets preserved when the farmer redials. Result: 98% reduction in operational latency and 90% fewer timeout errors. Legacy signaling protocols supercharged by contemporary AI.
Cross-Border Payments via USSD
The Pan-African Payment and Settlement System (PAPSS) has connected 160+ commercial banks across the continent. A developer can now build a USSD flow on a Kenyan Safaricom shortcode that facilitates real-time cross-border payment to an MTN MoMo wallet in Uganda — the FX and settlement layer entirely abstracted from the user.
Regulatory Mandates Driving Adoption
Central banks are actively subsidising and standardising USSD access to enforce financial inclusion mandates and expand tax bases. Ethiopia's "Digital Ethiopia 2025" program drove digital transaction values to $82 billion in four years by mandating expansion of low-bandwidth financial networks. Governments aren't waiting for smartphone saturation — they're building on the infrastructure that works today.
The $30 Smartphone Won't Kill USSD
GSMA and major operators (Airtel, MTN, Orange, Vodacom) have proposed $30-$40 4G smartphones for late 2025. A $40 handset could connect 20M people; $30 could reach 50M. But until these achieve total continent-wide saturation — which will take years — USSD remains the universal fallback. And even after smartphones dominate, the data cost problem persists. Users will still dial *123# to avoid spending 9% of their income on 1GB.