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| How to Block International Calls on MTN SIM Card |
Learn how to block international calls on your MTN SIM card using USSD codes, phone settings, and customer care support. Stay safe and avoid costly scam calls.
Staying connected is important, but sometimes unwanted international calls can be frustrating, expensive, and even a risk to your mental peace. If you are an MTN subscriber, you may receive spam calls from unknown international numbers, which can lead to high charges if answered. The good news is that MTN Nigeria allows you to block international calls on your SIM card easily.
In this guide, I’ll show you practical methods you can use to block international calls on MTN and prevent unnecessary interruptions.
Why You May Want to Block International Calls
Blocking international calls can save you from:
- High costs – Accidental answering of international calls can drain your airtime balance.
- Fraud & scams – Many scam calls originate from unknown international numbers.
- Peace of mind – Say goodbye to unnecessary late-night or random call disturbances.
Methods to Block International Calls on MTN SIM Card
1. Using Call Barring Service
MTN provides a call barring feature that allows you to restrict certain types of calls. Here’s how to activate it:
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Go to your phone dialer.
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Dial:
*33*0000#(Here, 0000 is the default barring PIN. If you have changed yours, use the new PIN.)
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Once activated, all outgoing international calls will be barred from your MTN line.
To deactivate later, simply dial:
#33*0000#2. Using MTN Call Settings on Your Phone
Most smartphones have a built-in call settings feature. You can block specific numbers or entire international codes:
- On Android: Go to Phone App > Settings > Block Numbers > Add country codes or numbers.
- On iPhone: Go to Settings > Phone > Call Blocking & Identification > Add numbers to block.
This way, you can filter unwanted international numbers without using MTN’s USSD.
3. Contact MTN Customer Care
If you’re not comfortable with codes, you can ask MTN to block international calls on your SIM:
- Dial 300 (MTN Customer Care).
- Request for “International Call Barring.”
- Provide your line details for confirmation.
They will activate it for you within minutes.
Pro Tips for Safety
- Always be cautious of numbers starting with +224, +221, +235, +90 (common spam call origins).
- Do not return missed calls from strange international numbers.
- Consider activating MTN DND (Do Not Disturb) to reduce spam SMS and promotional calls by sending STOP to 2442.
Final Thoughts
Unwanted international calls can be annoying and risky, but MTN makes it easy to block them. Whether through call barring codes, phone settings, or customer support, you can stay in control of your line and protect your airtime balance.
If you want more helpful MTN tips, check out our latest guide on How to Block MTN SIM Card When Lost or Stolen to secure your mobile identity.
