28.03.2025

How to Block Unwanted SMS and Protect Your Privacy?

Nowadays, blocking SMS is becoming a key element of confidentiality protection. Text spam not only disturbs phone users' peace — scammers use messages to steal personal data and money by pretending to be banks, courier services, or online stores. In this article, we explain how to block SMS spam and improve your privacy.

Blocking SMS
How to block promotional SMS on Android

Unwanted SMS: How to Protect Yourself and Why It Matters?

SMS spam is not just an annoying problem — it poses a serious threat to the data security of phone owners. Attackers often send messages with malicious links that, once clicked, can install harmful software on your device. Especially dangerous are phishing attempts through fake notifications about money transfers or blocked accounts.

A list of the most common threats related to unwanted messages:

  • Attempts to steal online banking login credentials.
  • Fake links for tracking courier shipments.
  • Impersonation of well-known companies to extort payments.
  • Aggressive advertising of products from unknown sources.

Even seemingly harmless promotional messages can lead to serious consequences. That’s why protecting privacy and being aware of available phone security methods is so important.

How to Block Promotional SMS on Android?

Android smartphone users have several options to fight unwanted messages. For example, SMS blocking can be enabled directly via the Messages app: go to settings, find the 'Spam protection' section, and activate the switch.

Android also offers advanced filtering features, allowing the system to automatically detect suspicious numbers reported as spam by other users. You can also manually add specific numbers to a blacklist — just hold the message and select the block sender option.

SMS blocking apps

Blocking SMS on iPhone

iPhone users can protect themselves from unwanted notifications using built-in iOS features. Blocking SMS is both simple and effective: just open 'Messages', select the sender, tap the info icon, and choose 'Block this caller'.

iPhone also allows additional protection of private information through filtering messages from unknown senders. In 'Settings', you can enable a feature that automatically moves SMS from non-contacts to a separate inbox.

Best Apps for Blocking SMS

While built-in system features are often enough for basic protection, dedicated apps offer much broader spam filtering options:

  • Master Call Blocker — allows blocking numbers from the contact list and automatically rejecting all unknown calls and SMS.
  • Call and SMS Easy Blocker — enables creating advanced blacklists and maintaining a detailed log of blocked contact attempts.
  • TrueCaller — a popular app that identifies and blocks unwanted numbers, also showing the caller’s location.
  • Blacklist Plus — user-friendly software for creating both blacklists and whitelists, with password protection for settings.

When choosing a blocking app, be sure to install programs only from official stores. This ensures both data protection and regular security updates.

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