From the Settings page of the app, enable the Block Text Messages setting. When selected, numbers that currently appear in the Blocked tab will also have text messages blocked.
**Due to recent changes in the Android system, Text Blocking is no longer supported on Android devices running 4.4.x and higher.
Related FAQs:
Why is Call Detector not blocking text or SMS messages?
Can I view my blocked text messages?
If I block a text, will the blocked number know that they are blocked?
What if the number I want blocked isn't 10 digits in length?
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