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Spam calls and scam texts are major annoyances, but free tools from your phone and carrier can help you drastically reduce unwanted interruptions. On Hands-On Tech, Mikah Sargent shares practical guidance for blocking robocalls and filtering junk messages—no matter which device or US carrier you use.
Why Robocalls and Spam Texts Are Still a Problem
Despite years of user complaints and industry crackdowns, spam calls and fake texts remain common. Scammers and telemarketers continuously rotate numbers, making simple blocking mostly ineffective. Many people feel they've tried everything, but still see robocalls about warranties, fake deliveries, or compromised accounts.
Modern smartphones and network-level services now offer more effective filtering. Knowing which settings to activate—and what not to do—can dramatically cut down the spam you receive.
Quick Summary: What Works and What Doesn't
- Manual blocking of numbers rarely helps because scammers use thousands of random numbers.
- Built-in phone features on both iPhone and Android can silence calls and filter texts from unknown senders.
- Carrier-level spam protection is available for free from major US providers and stops many robocalls before they reach your device.
- Reporting spam helps networks recognize and block new scam campaigns, strengthening community protection.
- Never engage with scam calls or texts—responding confirms your number is active and can attract more contact.
How to Stop Robocalls on iPhone
Silence Unknown Callers and Calls Flagged as Spam
In your iPhone's Settings:
- Go to Phone (found in the Apps section).
- Turn on Screen Unknown Callers (previously called "Silence Unknown Callers").
- This sends any call not in your contacts directly to voicemail.
- Turn on Spam Silencing if your iPhone's carrier supports it.
- This uses carrier data to identify and silence likely spam or fraud calls.
Filter Text Messages from Unknown Senders
- In Messages, tap the menu at the top and select Manage Filtering.
- Enable filters to separate texts from numbers not in your contacts.
- These messages go in a separate folder, and notifications are suppressed unless you choose otherwise.
- Apple's filters may also split texts into Transactions, Promotions, and other categories, keeping clutter away from your primary inbox.
How to Stop Robocalls on Android
Block & Report Spam Calls with Phone App
- Open your Android's Phone app.
- Enable Caller ID and Spam Protection.
- On newer devices, look for Text Protection under "Protection and Safety."
- When a suspicious message arrives, long-press it and tap Block and Report Spam.
Use Google Messages' Built-In Spam Protection
- Tap your account icon in the Messages app.
- Go to Settings > Spam Protection.
- Turn it on for automatic junk filtering.
Google Pixel Phones: Use Call Screen
- Pixel devices can screen unknown calls, prompting callers to state their reason.
- If the call is likely spam, most robocallers disconnect.
The Power of Carrier-Level Blocking
All major US mobile carriers (AT&T, Verizon, T-Mobile) offer free apps to block or filter spam calls and texts before they get to you:
- AT&T: ActiveArmor
- Verizon: Call Filter
- T-Mobile: Scam Shield
Basic versions are free, and paid tiers offer reverse lookup or VPN features. Activating these core features can block the bulk of robocalls system-wide.
What NOT to Do: Engaging Makes It Worse
Replying, even with "STOP" or "wrong number," signals to scammers that your number is valid and monitored. Never press number prompts or respond to suspicious messages, as this increases your risk for further targeting.
How to Report Spam and Scam Messages
- Forward spam texts to 7726 (SPAM)—networks analyze and block new patterns.
- Report phone scams to:
- FTC: reportfraud.ftc.gov
- FCC: fcc.gov/complaints
- Register at donotcall.gov to block legitimate telemarketers (but scammers won't obey).
Key Takeaways
- Use built-in features and carrier apps for automated filtering—manual blocking is rarely effective.
- Never engage with robocalls or suspicious texts.
- Report spam to help telecoms and authorities improve protections for everyone.
The Bottom Line
You won't eliminate all spam overnight, but enabling iPhone or Android filters and using your carrier's free blocking services will stop most robocalls and junk messages. Ignore and report the rest. Stay vigilant with messages claiming to be from banks or government agencies—never tap links, and always verify directly.
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