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TipsMay 6, 2026

How to Block Unknown Sender Texts: A Guide for Everyday Users

By The Robokiller Team

How to Block Unknown Sender Texts: A Guide for Everyday Users

Receiving unsolicited text messages from unknown senders can be both annoying and potentially harmful. These messages often contain spam, scams, or unwanted promotions. Fortunately, there are effective methods to block these messages and safeguard your privacy.

What Are Unknown Sender Texts?

Unknown sender texts are messages received from phone numbers not saved in your contacts. They can range from legitimate communications to spam or scam attempts. Identifying and blocking these messages is crucial to maintain your privacy and security.

How Can I Block Unknown Sender Texts on My Phone?

For iPhone Users:

  1. Open the Settings app.
  2. Scroll down and tap on Messages.
  3. Toggle on Filter Unknown Senders.

This feature moves messages from unknown senders to a separate tab, reducing interruptions.

For Android Users:

  1. Open the Messages app.
  2. Tap the three-dot menu icon and select Settings.
  3. Tap on Spam Protection.
  4. Enable Enable Spam Protection.

This will help identify and block potential spam messages.

What Is Robokiller and How Does It Help? (robokiller.com)

Robokiller is a comprehensive spam call and text blocking app that uses advanced algorithms, artificial intelligence, and machine learning to analyze incoming messages. It evaluates the origin, content, and attachments of each text to determine if it's spam. If identified as spam, Robokiller moves the message to a special folder called Unknown & Junk in your Messages app. You can customize filter settings and review flagged messages at any time.

How Do I Set Up Robokiller on My Phone? (robokiller.com)

For iPhone Users:

  1. Download and install the Robokiller app from the App Store.
  2. Open the app and follow the on-screen instructions to set up.
  3. After setup, open your phone’s Settings.
  4. Scroll down and tap on Messages.
  5. Tap on Unknown & Spam.
  6. Enable Robokiller under the SMS Filtering section.

For Android Users:

  1. Download and install the Robokiller app from the Google Play Store.
  2. Open the app and follow the on-screen instructions to set up.
  3. After setup, open your phone’s Settings.
  4. Scroll down and tap on Apps & Notifications.
  5. Tap on Default Apps.
  6. Tap on SMS App and select Robokiller.

By setting Robokiller as your default SMS app, it will automatically filter and block spam messages.

Are There Alternatives to Robokiller? (play.google.com)

Yes, there are other apps available that offer spam call and text blocking features. For example, Hiya and YouMail are popular alternatives. However, Robokiller is known for its comprehensive features, including Answer Bots that waste scammers' time, and its ability to block 99% of spam calls and texts. Additionally, Robokiller has a user-friendly interface and provides detailed analytics on blocked messages.

How Effective Is Robokiller in Blocking Spam Texts? (robokiller.com)

Robokiller boasts a high success rate in blocking spam texts, with users reporting a significant reduction in unwanted messages. The app's advanced algorithms and machine learning capabilities enable it to accurately identify and block spam messages, providing users with a more streamlined and secure messaging experience.

Are There Any Drawbacks to Using Robokiller? (trustpilot.com)

Some users have reported issues with Robokiller, including technical glitches and challenges in blocking certain numbers. Additionally, there have been concerns about customer support responsiveness and difficulties in canceling subscriptions. It's important to consider these factors and read user reviews before deciding if Robokiller is the right solution for you.

Conclusion

Blocking unknown sender texts is essential for maintaining your privacy and security. Utilizing built-in phone features or third-party apps like Robokiller can effectively reduce unwanted messages. While Robokiller offers comprehensive features and a high success rate, it's important to weigh its benefits against potential drawbacks and consider user feedback when making your decision.

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