The verdict in three sentences
Requiring a smartphone and data to pay means excluding 40% to 55% of rural customers. USSD payment works on any phone, with no internet, via a short code dialled on the keypad. Added as a fallback, it captures customers the web checkout ignores entirely.
Why USSD is still essential
USSD (the familiar *...# codes) opens a direct session with the operator without going through the internet. The customer dials a code, enters an amount and PIN, and confirms. It all happens in text, on a basic screen. It is the only truly universal channel in West and East Africa in 2026.
| USSD indicator 2026 | Typical value | Comment |
|---|---|---|
| Feature phone share (rural) | 40–55% | No smartphone or data |
| USSD session length | 90 s | Beyond that, it expires |
| USSD completion rate | ~70% | Vs ~55% web on 2G |
| Data requirement | 0 MB | Works offline |
| Session cost to merchant | negligible | A few FCFA |
Where a web checkout fails for lack of a stable connection, USSD succeeds because it needs no data bandwidth at all.
How to integrate it as a fallback
The idea is not to replace web payment but to offer it as a second choice when the customer has no data or fails online. Concretely, you display a short code to dial, and the merchant receives confirmation via webhook exactly as for an app payment.
| USSD journey step | Detail | Target time |
|---|---|---|
| Generate the reference | Amount + order id | instant |
| Show the short code | Per operator (*...#) | — |
| Customer dials | Code + amount + PIN | < 90 s |
| Operator confirmation | Webhook to merchant | a few s |
| Retry if abandoned | SMS with the code | < 1h |
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Completion drops fast if the session exceeds 90 seconds, so you need a short code, a pre-filled amount where possible, and ultra-simple instructions in English and the local language.
Mini case study
Fatima sells farm seeds in Arusha and delivers to many villages. Of 600 monthly orders, 45% of her customers have no data — that is 270 orders she was losing for lack of a suitable payment method. At an average basket of 9,000 FCFA and a 70% USSD completion rate, she recovers 189 payments, i.e. 1,701,000 FCFA per month in previously impossible sales.
FAQ
Does USSD work on all operators? Yes, each mobile money operator offers its own short code. The integration aggregates several to cover all data-less customers.
Does the customer need internet? No, none at all. That is precisely the point: USSD runs over the classic GSM network, so it works even where 3G/4G is absent.
Why is the session limited to 90 seconds? The operator closes the session to free the channel. So you need a short flow: too many steps and the customer exceeds the limit, which crashes completion.
Can I combine USSD and app payment? Yes, that is ideal: offer the app by default and USSD as fallback. The merchant receives the same webhook confirmation in both cases.
Let's talk about your project. We add a USSD payment fallback to your checkout to capture data-less customers. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.
