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TipsMay 6, 2026

Top Apps to Block Scam Calls on Your Mobile Phone

By The Robokiller Team

Top Apps to Block Scam Calls on Your Mobile Phone

Scam calls are a pervasive issue in the United States, with Americans receiving over 50 billion robocalls in 2024 alone. (whocalledus.net) These unsolicited calls can range from fraudulent IRS threats to telemarketing pitches, making it essential to have reliable tools to block them.

What Are Scam Calls?

Scam calls are unsolicited phone calls made with the intent to deceive or defraud the recipient. They often involve impersonating legitimate organizations, such as government agencies or reputable companies, to steal personal information or money.

Why Are Scam Calls So Common?

The proliferation of scam calls is largely due to the low cost and ease of making automated calls. Scammers can use Voice over Internet Protocol (VoIP) technology to dial thousands of numbers per hour at minimal expense. Additionally, caller ID spoofing allows them to disguise their numbers, making it harder for recipients to identify fraudulent calls. (whocalledus.net)

How Can You Block Scam Calls?

There are several effective methods to block scam calls on your mobile phone:

  1. Register for the National Do Not Call Registry

By registering your number, legitimate telemarketers are legally required to stop calling you within 31 days. While this won't stop all scam calls, it can reduce the volume. (whocalledus.net)

  1. Use Built-in Phone Features
  • iPhone: Go to Settings > Phone > Silence Unknown Callers to automatically silence calls from unknown numbers.

  • Android: Open the Phone app, tap the three-dot menu, select Settings > Caller ID & Spam, and enable 'Filter spam calls'.

  1. Carrier Services

Many mobile carriers offer free or paid services to block scam calls:

  • AT&T: Offers Call Protect, which identifies and blocks potential spam calls. (consumerreports.org)

  • T-Mobile: Provides Scam Shield, which includes Scam ID and Scam Block features to detect and block scam calls. (consumerreports.org)

  • Verizon: Offers Call Filter, which detects and blocks spam calls. (consumerreports.org)

  1. Third-Party Apps

Several apps are designed to identify and block scam calls:

  • Robokiller: Blocks 99% of robocalls and uses AI "Answer Bots" to waste scammers' time. (parade.com)

  • Truecaller: Identifies unknown callers and blocks spam calls using a large global database. (famisafe.wondershare.com)

  • Hiya: Provides spam call detection and caller ID services, with a database of recognized spam numbers. (famisafe.wondershare.com)

How Do These Apps Compare?

When evaluating call-blocking apps, consider the following:

  • Robokiller: Known for its high blocking rate and unique "Answer Bots" feature, which engages scammers to waste their time. (parade.com)

  • Truecaller: Offers a vast database of spam numbers and provides caller ID services, but may require access to your contacts for full functionality. (famisafe.wondershare.com)

  • Hiya: Provides spam call detection and caller ID services, with a database of recognized spam numbers. (famisafe.wondershare.com)

Which App Is Right for You?

The best app depends on your specific needs:

  • Robokiller: Ideal for those seeking a robust solution with high blocking rates and additional features like "Answer Bots".

  • Truecaller: Suitable for users who want a large database of spam numbers and caller ID services.

  • Hiya: Good for users looking for spam call detection and caller ID services.

Conclusion

Scam calls are a significant nuisance, but with the right tools, you can effectively block them. Whether you choose built-in features, carrier services, or third-party apps like Robokiller, Truecaller, or Hiya, taking proactive steps can help protect your privacy and reduce unwanted interruptions.

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