Block Spam Calls on iPhone for Verizon, AT&T, and T-Mobile

 Spam calls are one of the most common annoyances for smartphone users. Whether you’re on Verizon, AT&T, or T-Mobile, iPhone offers built-in and carrier-specific tools to block robocalls and telemarketers effectively. Here’s how to stop them.

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1. Enable iPhone’s Built-In Spam Filter

1. Go to Settings → Phone → Silence Unknown Callers.

2. Turn on Silence Unknown Callers.
   This feature automatically sends calls from unknown numbers to voicemail while allowing saved contacts and recent outgoing numbers to ring.

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2. Verizon Users: Turn On Call Filter

• *Dial 662 to enable Verizon’s spam blocker.

• You can also manage it through the Verizon Call Filter app:

  1. Open the app → Tap Settings.

  2. Toggle Spam Filter → On.

  3. You can customize it to block “High Risk” or “All Spam” calls.

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3. AT&T Users: Enable ActiveArmor

1. Install or open the AT&T ActiveArmor app.

2. Tap Calls → Auto Block Fraud Calls.

3. Turn on Nuisance Call Alerts for suspected spam calls.
   ActiveArmor is free for all AT&T customers and automatically updates its spam list.

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4. T-Mobile Users: Use Scam Shield

1. Dial #662# to activate T-Mobile’s free Scam Shield protection.

2. You can also use the Scam Shield app to:

   • View blocked calls.

   • Report new spam numbers.

   • Enable Scam Block or Scam ID for stronger filtering.

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5. Extra Tips for All Users

• Report spam calls by visiting donotcall.gov (National Do Not Call Registry).

• Avoid answering calls from unknown numbers; scammers often verify active lines this way.

• Regularly update iOS and your carrier apps for the latest spam detection features.

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OnePlus Tip

For maximum protection, combine your carrier’s spam filter with iPhone’s built-in Silence Unknown Callers. This dual layer keeps most robocalls and scam numbers from ever reaching your phone.