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TipsMay 6, 2026

How to Stop Suspicious Text Messages While Allowing Contacts Through

By The Robokiller Team

How to Stop Suspicious Text Messages While Allowing Contacts Through

Receiving unsolicited or suspicious text messages, commonly known as spam or "robotexts," can be both annoying and potentially harmful. Fortunately, there are several methods to block these unwanted messages while ensuring that texts from your contacts continue to come through.

What Are Spam Texts and Why Do They Matter?

Spam texts are unsolicited messages sent to a large number of recipients, often for advertising purposes or as part of phishing schemes. They can lead to identity theft, financial loss, and other security risks. Understanding how to block these messages is crucial for maintaining your privacy and security.

How Can I Block Spam Texts on My iPhone?

Use Built-in Filtering Features

iPhones offer a feature called "Filter Unknown Senders" that separates messages from unknown contacts into a separate tab. To enable this:

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

This will create an "Unknown Senders" tab in your Messages app, where messages from numbers not in your contacts will be stored. You can periodically check this tab for any important messages that might have been filtered. (tomsguide.com)

Report Junk Messages

When you receive a spam text, you can report it directly from the Messages app:

  1. Open the message.
  2. Tap Report Junk below the message.
  3. Confirm by tapping Delete and Report Junk.

This action helps Apple identify and block similar messages in the future. (tomsguide.com)

How Can I Block Spam Texts on My Android Phone?

Enable Spam Protection

Android devices, particularly those using the Google Messages app, have a built-in spam protection feature:

  1. Open the Messages app.
  2. Tap the three dots in the top-right corner and select Settings.
  3. Tap on Spam Protection.
  4. Toggle on Enable Spam Protection.

This feature uses machine learning to identify and block spam messages. (techradar.com)

Block Individual Numbers

To block a specific number:

  1. Open the Messages app.
  2. Open the conversation with the number you want to block.
  3. Tap the three dots in the top-right corner and select Details.
  4. Tap Block and report spam.

This will block the number and report it as spam. (guidingtech.com)

How Can I Use Third-Party Apps to Block Spam Texts?

Third-party apps can provide additional layers of protection against spam texts:

Robokiller

Robokiller is a popular app that blocks spam texts and calls. It uses advanced algorithms to identify and block unwanted messages while allowing texts from your contacts to pass through. The app has received positive reviews for its effectiveness and user-friendly interface. (hp.com)

Other Apps

Other apps like Nomorobo and Truecaller also offer spam blocking features. These apps maintain databases of known spam numbers and can automatically block messages from these sources. However, it's important to review each app's privacy policy and user reviews to ensure it meets your needs.

How Can I Report Spam Texts?

Reporting spam texts helps authorities and service providers take action against spammers:

  • Forward to 7726 (SPAM): Most carriers allow you to forward spam texts to 7726. This helps them identify and block spam sources. (mcafee.com)

  • Report to the FTC: In the U.S., you can report unwanted texts to the Federal Trade Commission (FTC) through their website. This assists in tracking and taking action against spammers. (mcafee.com)

How Can I Prevent Receiving Spam Texts?

Be Cautious with Your Phone Number

Limit sharing your phone number online and avoid posting it publicly. The more places your number is listed, the higher the chance it will be collected by spammers. (usa.kaspersky.com)

Opt-Out of Marketing Messages

When signing up for services or promotions, look for options to opt-out of marketing communications. This can reduce the number of unsolicited messages you receive.

Use a Do Not Call Registry

In the U.S., registering your number with the National Do Not Call Registry can help reduce unsolicited marketing messages. While it may not eliminate all spam texts, it can decrease their frequency. (cbsnews.com)

Conclusion

Blocking spam texts while allowing messages from your contacts is achievable through a combination of built-in phone features, third-party apps, and proactive measures. By implementing these strategies, you can significantly reduce unwanted messages and enhance your mobile experience.

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