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TipsMay 6, 2026

Effective Strategies to Reduce Unwanted Calls on Your US Phone Number

By The Robokiller Team

Effective Strategies to Reduce Unwanted Calls on Your US Phone Number

Unwanted calls, including robocalls and telemarketing, are a persistent nuisance for many Americans. While the National Do Not Call Registry offers some protection, it doesn't block all unwanted calls, especially those from scammers and spoofed numbers. (kiplinger.com) To effectively reduce these interruptions, consider implementing the following strategies:

How Can Call-Blocking Apps Help Reduce Unwanted Calls?

Call-blocking apps are designed to identify and block unwanted calls by maintaining databases of known spam numbers. These apps can automatically block or label suspicious calls, allowing you to decide whether to answer. Popular options include RoboKiller, Hiya, and Truecaller. (kiplinger.com)

What Built-in Features Do Smartphones Offer to Block Unwanted Calls?

Many smartphones come equipped with features to help manage unwanted calls:

  • iPhone: Enable "Silence Unknown Callers" by navigating to Settings > Phone > Silence Unknown Callers. This feature silences calls from numbers not in your contacts, sending them directly to voicemail. (techradar.com)

  • Android: Use the built-in call-blocking feature to block specific numbers or enable options like "Block Unknown Callers" to silence calls from unknown numbers.

How Do Carrier Services Assist in Blocking Unwanted Calls?

Many mobile carriers offer services to help block unwanted calls:

  • AT&T: Provides Call Protect, which identifies and blocks potential spam calls. (att.com)

  • T-Mobile: Offers Scam Shield, which includes Scam Block to prevent scam calls.

  • Verizon: Provides Call Filter to identify and block spam calls.

These services often come with free and premium tiers, offering varying levels of protection.

What Are Star Codes and How Do They Help Block Unwanted Calls?

Star codes are special dialing codes that allow you to activate or manage call-blocking features directly from your phone's keypad:

  • Call Blocking: Dial *60 to activate and *80 to deactivate. To block a specific number, press #, dial the 10-digit number, and press # to confirm. (att.com)

  • Anonymous Call Rejection: Dial *77 to activate and *87 to deactivate. This feature blocks calls from numbers that have blocked their caller ID information.

How Can You Report Unwanted Calls to Authorities?

Reporting unwanted calls helps authorities track and take action against violators:

  • Federal Trade Commission (FTC): Report unwanted calls to the FTC at ReportFraud.ftc.gov.

  • National Do Not Call Registry: Register your number at www.donotcall.gov to reduce telemarketing calls.

How Does RoboKiller Stand Out in Blocking Unwanted Calls?

RoboKiller is a leading call-blocking app that offers advanced features to combat unwanted calls:

  • Spam Call Blocking: RoboKiller uses a vast database to identify and block spam calls effectively.

  • Call Screening: It provides real-time call screening, allowing you to listen to voicemail messages before deciding to answer.

  • Customizable Block Lists: Users can create personalized block lists to manage unwanted calls more effectively.

By combining these strategies, you can significantly reduce unwanted calls on your US phone number, enhancing your privacy and peace of mind.

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