← Back to Blog
TipsMay 6, 2026

How to Identify and Block Spam Calls: A Comprehensive Guide

By The Robokiller Team

How to Identify and Block Spam Calls: A Comprehensive Guide

Spam calls are a persistent nuisance, often leading to scams and unwanted interruptions. Fortunately, there are several methods to identify and block these calls effectively.

What Are Spam Calls?

Spam calls are unsolicited phone calls intended to promote products, services, or fraudulent schemes. They can range from robocalls delivering pre-recorded messages to live callers attempting to deceive you into providing personal information. Recognizing these calls is the first step in protecting yourself.

How Can I Identify Spam Calls?

1. Look for Caller ID Alerts

Many smartphones now display alerts like "Scam Likely" or "Spam Risk" for suspected spam calls. These warnings are generated based on databases of known spam numbers and user reports. For instance, Verizon advises users to be cautious of calls from unknown numbers or those that appear suspicious. (verizon.com)

2. Analyze the Caller’s Behavior

Be wary of calls that pressure you to act immediately, request personal or financial information, or offer deals that seem too good to be true. Scammers often use high-pressure tactics to elicit quick responses. (verizon.com)

3. Use Reverse Phone Lookup Services

If you receive a call from an unfamiliar number, consider using reverse phone lookup services to identify the caller. While not always foolproof, these services can provide additional context about the number. (makeuseof.com)

How Can I Block Spam Calls on My Smartphone?

For iPhone Users:

  • Enable Call Screening:

iOS 26 introduced a feature that prompts unknown callers to state their name and reason for calling. Their response is transcribed and displayed to you, allowing you to decide whether to answer. To activate:

  1. Go to Settings > Phone > Screen Unknown Callers.
  2. Select "Ask Reason for Calling." (techradar.com)
  • Silence Unknown Callers:

This feature sends calls from unknown numbers directly to voicemail. To enable:

  1. Go to Settings > Phone.
  2. Toggle on "Silence Unknown Callers." (mcafee.com)

For Android Users:

  • Activate Spam Protection:

Many Android devices offer built-in spam protection:

  1. Open the Phone app.
  2. Tap the three-dot menu > Settings > Caller ID & Spam.
  3. Toggle on "Filter spam calls." (techadvisor.com)
  • Use Do Not Disturb Mode:

To block all calls except those from contacts:

  1. Go to Settings > Sound > Do Not Disturb.
  2. Customize exceptions to allow calls from contacts. (techadvisor.com)

Are There Third-Party Apps to Block Spam Calls?

Yes, several apps can enhance spam call detection and blocking:

  • Robokiller:

Robokiller uses advanced algorithms and a vast database of known spam numbers to identify and block unwanted calls. It also offers features like answering spam calls with pre-recorded messages to waste the scammer's time. (usa.kaspersky.com)

  • Truecaller:

Truecaller provides real-time spam detection and a community-based spam list. It also offers caller ID services to identify unknown numbers. (makeuseof.com)

  • Hiya:

Hiya offers spam detection, caller ID, and reverse phone lookup features. It also provides a community-based spam list to identify and block unwanted calls. (makeuseof.com)

How Can I Report Spam Calls?

Reporting spam calls helps improve detection systems:

  • Use Carrier Services:

Some carriers allow users to report spam calls directly through their services. For example, Verizon provides guidelines on identifying and avoiding spam calls. (verizon.com)

  • Use Third-Party Apps:

Apps like Truecaller and Hiya allow users to report spam numbers, contributing to community-based spam lists.

Conclusion

Identifying and blocking spam calls is crucial for protecting your privacy and avoiding potential scams. By utilizing built-in smartphone features, third-party apps, and staying vigilant, you can significantly reduce unwanted interruptions.

FAQs

1. What should I do if I receive a spam call?

If you receive a spam call, avoid sharing personal or financial information. Hang up immediately and consider reporting the number to your carrier or a third-party app.

2. Are spam call blocking apps free?

Many spam call blocking apps offer free versions with basic features. However, premium versions may require a subscription for advanced functionalities.

3. Can spam call blocking apps completely eliminate spam calls?

While these apps significantly reduce spam calls, no solution can guarantee 100% elimination due to the evolving nature of scam tactics.

4. How do spam call blocking apps identify spam numbers?

These apps use databases of known spam numbers, user reports, and advanced algorithms to identify and block unwanted calls.

5. Are there any legal implications of using spam call blocking apps?

Using spam call blocking apps is legal. However, ensure that the app complies with privacy regulations and does not violate any laws in your jurisdiction.

Highlights:

Frequently Asked Questions

Related articles

Live life spam-call-free.

Robokiller blocks 99% of spam calls and texts so you can take your phone back.

Try free for 7 days