Stop Spam Texts on iPhone 15: How to Automatically Filter Unknown Numbers

Receiving spam or unwanted text messages from unknown numbers can be frustrating. Fortunately, iPhone 15 includes built-in tools that automatically filter and separate messages from people who are not in your contacts.

⚠️ Filtering messages does not block the sender. It simply moves unknown messages to a separate folder.

Enable Message Filtering in Settings

Follow these steps to activate the built-in filtering feature:

Open Settings.
Scroll down and tap Messages.
Find Filter Unknown Senders.
Turn the toggle ON.

Once enabled, your Messages app will automatically create two categories: Known Senders and Unknown Senders.

Where to Find Filtered Messages

After enabling the feature:

Open the Messages app.
Tap Filters in the top-left corner.
Select Unknown Senders to view filtered texts.

These messages will not trigger notifications, helping reduce distractions.

How to Block a Specific Number

If a number keeps sending unwanted texts, you can block it completely:

Open the message from the sender.
Tap the number at the top of the screen.
Select Info.
Scroll down and tap Block this Caller.

Use Third-Party SMS Filtering Apps

You can install spam detection apps from the App Store for advanced filtering. These apps use databases to automatically detect suspicious or scam messages.

To enable them:

Go to Settings.
Tap Messages.
Select Unknown & Spam.
Enable your installed filtering app.

💡 Tip: Keep your iPhone updated to the latest iOS version to ensure the best spam protection features.

Why Filtering Unknown Messages Matters

Text message scams are increasingly common. Filtering unknown senders helps you:

Reduce phishing risks
Avoid accidental clicks on malicious links
Keep your inbox organized
Protect your personal data

If you receive a suspicious message pretending to be from a bank, delivery service, or government agency, do not click any links. Contact the organization directly through official channels.