How to Block International Calls and Telemarketers on Your Phone

How to Block International Calls and Telemarketers on Your Phone 

Unwanted international calls and annoying telemarketing messages are a daily frustration for many smartphone users. Whether it’s robocalls trying to sell fake products, spam from overseas numbers, or aggressive marketers disturbing your peace, blocking them is the best solution. In this guide, you will learn how to block international calls and telemarketers on Android and iPhone easily.

Why You Should Block International Calls and Telemarketers

• Avoid scams – Many fraudsters use international numbers to trick people into giving out personal or banking details.
• Save money – Accidentally picking up or calling back an international number may attract high charges.
• Peace of mind – Constant spam calls can be disruptive at work or while resting.

How to Block International Calls on Android Phones

If you use an Android device, here’s how to stop spam and international calls:

1. Block Numbers Directly in Phone Settings

   • Open the Phone app → Go to Recent Calls.
   • Tap the number you want to block → Select Block/Report Spam.
   • Once blocked, you won’t receive calls or SMS from that number again.

2. Use Do Not Disturb (DND) Mode

   • Go to Settings > Sound > Do Not Disturb.
   • Customize it to only allow calls from your contacts.
   • This will automatically block unknown and international numbers not saved in your phonebook.

3. Install Call-Blocking Apps
   Popular apps like Truecaller and Hiya allow you to:

   • Block all international numbers.
   • Automatically filter telemarketing calls.
   • Identify spam callers in real-time.

How to Block International Calls on iPhone (iOS)

Apple iPhones have built-in features to block spam calls:

1. Block Specific Numbers

   • Open the Phone app → Recents.
   • Tap the “i” icon next to the unwanted number → Select Block This Caller.

2. Silence Unknown Callers

   • Go to Settings > Phone > Silence Unknown Callers.
   • Any call not saved in your contacts will go directly to voicemail.

3. Use Third-Party Apps
   Apps like Hiya Caller ID and RoboKiller work perfectly on iOS to stop spam and telemarketing calls.

How to Block Telemarketers Using Network Provider Services

Most telecom providers also allow you to block spam calls directly at the network level. For example:

• MTN Nigeria DND Service – Send STOP to 2442 to stop receiving promotional messages.
• Airtel DND – Send STOP to 2442 as well.
• Glo & 9mobile – Both networks also support DND by sending STOP to 2442.

This service blocks marketing SMS and promotional calls from reaching your phone.

Bonus Tips to Avoid Spam Calls

• Never share your phone number on suspicious websites.
• Avoid calling back unknown international numbers.
• Regularly update your spam-blocking apps to stay protected.

Final Thoughts

Blocking international calls and telemarketers is easy if you use the right tools. Whether through built-in phone settings, call-blocking apps, or network DND services, you can finally take back control of your phone.

If you’re tired of endless spam, start by enabling Do Not Disturb and downloading trusted apps like Truecaller to keep scammers away.

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