MTN Called Me For My MoMo PIN" — OTP & MoMo Scams in Cameroon, Explained

"Hello, this is MTN customer service. We've detected a problem with your account — please read me the code you just received." If you haven't gotten that call or a variant of it, someone in your family has. MoMo fraud is one of the most common scams in Cameroon, and it all runs on one trick: getting you to read out a code.

Here's how it actually works — and why knowing the mechanics makes you un-scammable.

How the scam works, step by step

1. The scammer already has your number — from a leaked database, a marketplace listing, a group you joined.
2. They trigger a real verification on a real service — your MoMo wallet, your WhatsApp, your email — using your number.
3. You get a genuine OTP from the genuine service. It looks official because it is.
4. They call or text — pretending to be MTN, Orange, your bank, "customer care", a relative in distress — and ask you to read the code back "to confirm your identity" or "to stop the problem we detected".
5. You read it. They win. Whatever account that code unlocked is now theirs — and if it's your MoMo wallet, so is the money in it.

The scripts you'll hear in Cameroon

• "MTN/Orange support" — a problem with your account, a promo, a "security update". Real operators never call asking for codes or PINs. Never.
• The fake relative — "it's your cousin, I sent you money by mistake, send me the code to reverse it."
• Marketplace buyers — "I want to buy your item, I'm sending you a confirmation code — read it to me." (The code is your account verification.)
• MoMo "reversals" — claims they sent money to your wallet by accident and need you to "confirm the reversal" with a code or PIN.

The rules that end every one of these scams

• Never read a code to anyone. An OTP is for your eyes, on your phone. Any caller who wants it is a scammer — no exceptions for uniforms, titles, or urgency.
• Your MoMo PIN is a PIN, not a shareable. MTN and Orange will never ask for it by phone, SMS, or "agent".
• Urgency is the tool. "Act now or lose your account" exists to stop you thinking. Legitimate institutions don't rush you.
• Unexpected code + incoming call = hang up. Every time.

Where a temporary number helps (the other side of the coin)

Scam calls find you because your number is in too many places — marketplace listings, signup forms, leaked databases. Every app that demands a number at registration is another place your real line lives. Verifying signups on a temporary number keeps your real number scarce — and a number scammers can't find is a number they can't target. The full philosophy: why your real number shouldn't be public.

The 10-second habit

Code arrives, phone rings: Did I just request this? If yes — it's for your screen only. If no — someone's trying to break into something; don't touch it, don't share it, don't call back. Hang up, and let them dial the next number on the list.