TLDR
Android users have five layers of protection against scam texts: Google Messages built-in spam filter, Samsung Messages spam protection, carrier-level tools (T-Mobile Scam Shield, AT&T ActiveArmor, Verizon Call Filter), third-party apps, and reporting to 7726. ScamVerify™ recommends enabling all available layers since no single method catches everything. Google Messages alone processes over 2 billion messages daily for spam detection and blocks hundreds of millions of spam texts each month.
Method 1: Google Messages Built-In Spam Filter
Google Messages is the default messaging app on most Android phones (Pixel, Motorola, OnePlus, and many Samsung devices). Its spam filter uses machine learning to identify and block scam texts automatically.
How to Enable Spam Protection
- Open Google Messages
- Tap your profile icon in the top right
- Tap Messages settings
- Tap Spam protection
- Toggle Enable spam protection to ON
Once enabled, suspected spam texts are automatically moved to a "Spam & blocked" folder instead of your main inbox. You can review flagged messages by tapping the three-dot menu and selecting "Spam & blocked."
How to Report a Scam Text in Google Messages
- Open the scam text conversation
- Tap the three-dot menu (top right)
- Tap Details
- Tap Block & report spam
- Check the box for "Report spam" and tap OK
Reporting helps Google improve its spam detection across all 2 billion+ daily messages. If you also want to block scam calls on Android, see our companion guide for call blocking.
Method 2: Samsung Messages Spam Filter
Samsung Galaxy phones may use Samsung Messages instead of Google Messages. Samsung's built-in spam filter works differently but provides similar protection.
How to Enable Samsung Spam Protection
- Open Samsung Messages
- Tap the three-dot menu (top right)
- Tap Settings
- Tap Block numbers and spam
- Toggle Block unknown senders to ON
- If available, toggle SmartThings spam protection to ON
How to Block a Number in Samsung Messages
- Open the scam text conversation
- Tap the three-dot menu
- Tap Block number
- Confirm by tapping Block
Samsung also offers a "Block unknown senders" option that filters texts from numbers not in your contacts into a separate folder.
Method 3: Carrier Spam Protection Tools
All three major U.S. carriers offer free spam text filtering. These tools filter messages at the network level before they reach your phone.
| Carrier | Free Tool | Premium Tool | Key Features |
|---|---|---|---|
| T-Mobile | Scam Shield (free) | Scam Shield Premium ($4/mo) | Scam ID, scam block, caller ID |
| AT&T | ActiveArmor (free) | ActiveArmor Plus ($3.99/mo) | Spam risk alerts, reverse number lookup |
| Verizon | Call Filter (free) | Call Filter Plus ($2.99/mo) | Spam detection, risk meter, lookup |
T-Mobile Scam Shield Setup
- Download T-Mobile Scam Shield from the Google Play Store
- Open the app and sign in with your T-Mobile account
- Enable Scam Block to send high-risk texts/calls straight to spam
- Enable Scam ID to label suspected scam senders
AT&T ActiveArmor Setup
- Download AT&T ActiveArmor from the Google Play Store
- Sign in with your AT&T account
- Toggle on Automatic Fraud Blocking
- Set your spam risk tolerance level (low, medium, or high)
Verizon Call Filter Setup
- Download Verizon Call Filter from the Google Play Store
- Sign in with your Verizon account
- Enable Spam Detection under text settings
- Toggle on Block spam texts for automatic filtering
Method 4: Forward Scam Texts to 7726
Every major U.S. carrier supports the 7726 (SPAM) reporting system. Forwarding scam texts to 7726 alerts your carrier's abuse team, which investigates and blocks numbers at the network level.
How to Forward to 7726
- Open the scam text message
- Long-press the message to select it
- Tap Forward or the share icon
- Enter 7726 as the recipient
- Send the message
- Your carrier may reply asking for the sender's phone number. Reply with the number that sent the scam text.
This works on T-Mobile, AT&T, Verizon, and most MVNOs. The process is free and takes about 30 seconds. For a complete guide on reporting, see how to report scam texts.
Method 5: Third-Party Spam Blocking Apps
If your built-in tools are not catching enough spam, third-party apps add another layer of protection.
| App | Price | Key Features | Google Play Rating |
|---|---|---|---|
| Truecaller | Free (ads) / $2.99/mo | Caller ID, spam database, community reports | 4.4 stars |
| Hiya | Free / $3.99/mo | Spam detection, reverse lookup, call blocking | 4.3 stars |
| RoboKiller | $4.99/mo | AI spam blocking, answer bots, spam text filter | 4.1 stars |
| Nomorobo | $1.99/mo | Simultaneous ring blocking, robocall database | 4.0 stars |
What to Look For in a Third-Party App
- Real-time spam database updated with new scam numbers daily
- Text message filtering, not just call blocking (many apps only block calls)
- Community reporting so users flag new scam numbers for everyone
- Privacy policy that does not sell your contact list or message content
Method 6: Android System-Level Blocking
Android has built-in blocking that works regardless of your messaging app.
Block a Specific Number at the System Level
- Open Phone app (not Messages)
- Tap Recent calls
- Long-press the number you want to block
- Tap Block/report spam
- Confirm by tapping Block
Filter Unknown Senders (Android 14+)
- Open Settings
- Tap Notifications
- Tap Notification filtering or Silent notifications
- Enable filtering for messages from unknown senders
This moves texts from numbers not in your contacts to a separate notification channel, so they do not interrupt you.
Recommended Multi-Layer Setup
For maximum protection, ScamVerify recommends enabling all available layers:
- Enable Google Messages spam filter (free, catches most automated spam)
- Download your carrier's spam tool (free, filters at the network level)
- Forward every scam text to 7726 (free, improves carrier-level blocking for everyone)
- Add a third-party app if spam volume remains high (paid, most aggressive filtering)
- Check suspicious texts at ScamVerify text checker before clicking links
Knowing how to spot scam text messages by their content is still your best defense, since no automated filter catches 100% of scams.
FAQ
Does blocking a scam number actually stop the texts?
Blocking prevents future texts from that specific number, but scammers rotate through thousands of phone numbers. Blocking individual numbers helps, but carrier-level and app-based filters that identify scam patterns (not just numbers) are more effective for ongoing protection.
Is Google Messages spam filter always accurate?
No filter is perfect. Google Messages catches the majority of automated spam texts, but sophisticated scams that look like legitimate messages can slip through. Conversely, legitimate messages from new contacts or businesses may occasionally be flagged as spam. Check your "Spam & blocked" folder periodically to rescue any false positives.
Are carrier spam tools free?
All three major carriers (T-Mobile, AT&T, Verizon) offer a free tier of spam protection. Premium tiers ($2.99-$4/mo) add features like caller ID for unknown numbers, reverse lookup, and more aggressive blocking. The free tier is sufficient for most users.
Can I block all texts from unknown numbers?
Yes, but it is not recommended for most people. Blocking all unknown senders will also block legitimate texts from businesses, delivery notifications, appointment reminders, and two-factor authentication codes. Instead, use spam filtering that quarantines suspected spam to a separate folder for review.
What is 7726 and does it actually work?
7726 spells "SPAM" on a phone keypad. It is a universal reporting number supported by all major U.S. carriers. When you forward a scam text to 7726, your carrier investigates the sender. Reported numbers that generate enough complaints are blocked at the network level for all customers. It is one of the most effective tools for reducing spam because it improves filtering for everyone, not just you.
