How Do You Block Text Messages? A Complete Guide for iPhone & Android Users

Updated on July 11, 2025, by Xcitium

Text message spam is on the rise—and it’s more than just annoying. According to a 2023 report by Robokiller, Americans received over 55 billion spam texts in a single year. Whether it’s scams, marketing blasts, or persistent contacts, learning how do you block text messages can safeguard your peace of mind and even your cybersecurity.

In this blog, we’ll explore step-by-step instructions for blocking text messages on iPhone and Android, including advanced methods to stop receiving texts without blocking someone. This guide is especially useful for IT managers, business leaders, and anyone who values digital security.

Why You Might Need to Block Text Messages

Blocking text messages is more than a personal convenience—it’s a security strategy. Here’s why:

• 🛑 Prevent phishing SMS (smishing) attacks

• 🧩 Stop unknown numbers from reaching you

• 📵 Avoid spam from marketing bots or shady apps

• 🤫 Silence persistent or unwanted personal contacts

How to Block Text Messages on iPhone

Apple makes it simple to block texts from any number:

Steps to Block Someone Texting You on iPhone:

1. Open the Messages app.

2. Tap the conversation from the sender.

3. Tap the contact name/number at the top.

4. Tap Info → Block this Caller.

Once blocked, you’ll stop receiving texts, calls, and FaceTime from that number.

Block Text Messages Without Number on iPhone:

For iMessages or texts from email addresses:

• Go to Settings > Messages > Filter Unknown Senders

• This feature separates messages from unknown senders into a different tab

How to Block Text Messages on Android Phone

The method may vary slightly by brand (Samsung, Google Pixel, etc.), but the process is generally similar.

Steps to Block a Number on Android:

1. Open the Messages app

2. Tap and hold the message/conversation

3. Tap the 3-dot menu > Block > OK

This works for both SMS and MMS.

Block Text Messages Without Number on Android:

Some spam texts come from email addresses or alphanumeric senders (e.g., “PromoShop”). To block these:

• Go to Messages → Settings → Spam Protection → Enable it

• Use apps like Truecaller or Hiya to manage senders with no number.

Stop Receiving Text Messages Without Blocking

There are ways to mute or filter messages without actually blocking someone:

iPhone:

• Do Not Disturb for contacts

• Use Focus Mode to restrict communication

• Create an iOS Shortcut to auto-delete texts from specific contacts

Android:

• Archive conversations

• Use mute notifications or assign the contact to a silent group

• Filter texts with third-party SMS apps

How to Block Unknown Messages on Android and iPhone

Unrecognized senders are often marketing bots or scammers. Here’s how to prevent them:

On Android:

• Open Messages → Settings → Blocked numbers

• Enable Spam Protection

• Use block keyword filters in apps like Textra or Messages by Google

On iPhone:

• Go to Settings > Messages > Filter Unknown Senders

• Messages from unknown numbers or emails will be redirected to a separate tab

Use Third-Party Apps to Block Text Messages

If native options aren’t enough, you can use apps designed for spam blocking:

Top SMS Filtering Apps:

• Truecaller

• Hiya

• RoboKiller

• SMS Shield (iOS)

These platforms help block spam, identify senders, and auto-delete harmful links, enhancing both privacy and security.

Common Use Cases in Cybersecurity and Business

Blocking texts isn’t just for personal use. Organizations also need to:

• Protect employee devices from SMS-based phishing

• Avoid SMS bombarding from unknown sources

• Manage BYOD (Bring Your Own Device) security policies

Cybersecurity teams often automate mobile filtering as part of Mobile Device Management (MDM).

Quick Reference: Blocking Texts on Different Platforms

Tips to Manage and Prevent Text Message Spam

✅ Never click on links in messages from unknown numbers
✅ Report spam to your carrier (e.g., forward to 7726 in the US)
✅ Avoid replying “STOP” unless you trust the source
✅ Regularly clear old messages and cache
✅ Enable two-factor authentication (2FA) via apps instead of SMS

Conclusion: Control Your Inbox and Your Safety

Learning how do you block text messages is a small step toward securing your digital life—but a vital one. Whether you’re an IT manager protecting a fleet of corporate devices or just someone tired of spam, these tips can help you stay in control.

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Request your free demo with Xcitium now →

FAQs About Blocking Text Messages

1. How do you block text messages without blocking calls?

On iPhone, block via the Messages app. For Android, use custom SMS apps like Textra that let you block texts only.

2. Can you block text messages from email addresses?

Yes. Use spam filters or apps like Truecaller to block alphanumeric senders.

3. Can I block unknown numbers from texting me?

Yes. On iPhone, enable “Filter Unknown Senders.” On Android, enable spam protection in the Messages app.

4. How do I block texts but not calls from a contact?

Use Focus Mode or app-specific features to allow calls but mute or filter texts.

5. Do blocked texts still show up somewhere?

No. Once a number is blocked, its texts typically do not appear in your inbox or notifications.