Spam calls and robocalls have gone from annoying to relentless — fake “car warranty,” “IRS,” and “your account is compromised” calls, several times a day. You don’t need to buy an app or a service to cut them down dramatically. A few free settings and one simple habit will silence most of them. Here’s how to take your phone back.
Why they call, and why it’s so bad
Robocalls are cheap to send by the millions, and scammers spoof caller ID to show a local or trusted number, so blocking one number does little. That’s why the fix isn’t chasing individual numbers — it’s turning on the filters your phone and carrier already offer, and changing how you handle unknown calls.
Turn on “silence unknown callers”
This is the biggest single win, and it’s built in and free. On iPhone: Settings → Apps → Phone → Silence Unknown Callers. On Android (Phone app): tap the menu → Settings → Spam and Call Screen, and enable filtering. Calls from numbers not in your contacts go straight to voicemail without ringing. Real callers leave a message; robocallers don’t.
Enable your carrier’s free spam filter
All major US carriers offer free call-filtering apps and features that label or block likely spam: AT&T Call Protect, Verizon Call Filter, T-Mobile Scam Shield. Install or turn yours on. They flag “Scam Likely” and can auto-block the worst offenders at the network level, before your phone even rings.
The most important habit costs nothing: don’t answer numbers you don’t recognize, and never press a button. Answering (or pressing “1 to stop calls”) confirms your number is live and active — which gets you more calls, not fewer. Let unknown numbers go to voicemail and check it later.
Register on the Do Not Call list
Add your number free at DoNotCall.gov. It won’t stop scammers (who ignore the law), but it does stop legitimate telemarketers, which cuts the legal noise so the illegal calls are easier to spot and ignore. It takes two minutes and never expires.
Block and report the ones that get through
When a spam call slips past, block the number (it helps a little) and, more usefully, mark it as spam in your phone app — that feeds the filters that protect you and others. You can also report unwanted calls to the FTC at ReportFraud.ftc.gov. Reporting improves the automatic filtering over time.
Protect your number going forward
Fewer places having your number means fewer calls. Avoid entering it in online forms, giveaways, and “sign up to see the deal” boxes; use a secondary or virtual number (like Google Voice) for sketchy sign-ups; and be stingy about who you give it to. Your phone number is personal data — the more it leaks, the more it gets sold to call lists.
Never trust caller ID alone — spoofing makes a scam call look like your bank, a government agency, or a local number. If a call claims to be someone important and pressures you, hang up and call the organization back on a number you look up. Real institutions won’t mind; scammers can’t survive it.
Handle spam texts the same way
The same flood hits your text inbox — fake package notices, “is this you in this photo?”, wrong-number “hi :)” messages that slowly warm you up for a scam. Treat them like spam calls: don’t reply (not even to argue or say “stop”), never tap the links, and don’t call any number they include. Replying just confirms your number is active. Instead, use your phone’s report junk / report spam option (both iPhone and Android show it under a suspicious message), then delete and block. You can also forward spam texts to 7726 (SPAM) to report them to your carrier, exactly like the call version. And be extra wary of the “wrong number” texts that turn friendly — that’s a deliberate opening move for investment and romance scams, not an innocent mistake. Silence, report, delete: same playbook, fewer scams.
You don’t need to pay for spam-call protection. Turn on “silence unknown callers,” enable your carrier’s free filter, and register at DoNotCall.gov. Then adopt the one habit that matters most: don’t answer unknown numbers and never press a button — it only marks you as a target. Block and report what slips through, guard your number, and never trust caller ID on a pressuring call.
Quick questions
Does blocking numbers actually help?
A little, but scammers spoof and rotate numbers constantly, so blocking one rarely stops the flood. The bigger wins are silencing unknown callers and turning on your carrier’s filter, which target the pattern, not one number.
Should I answer to tell them to stop?
No. Answering or pressing a key confirms your number is live and gets you added to more call lists. Let unknown numbers go to voicemail — legitimate callers will leave a message.
Do I need a paid call-blocking app?
Usually not. Your phone’s built-in “silence unknown callers,” your carrier’s free filter, and DoNotCall.gov handle most of it at no cost. Paid apps offer extras, but start with the free tools first.
Why do spam calls show a local number?
That’s caller ID spoofing — scammers fake a nearby number so you’re more likely to pick up. It’s exactly why you shouldn’t trust the number shown, especially on an unexpected, pressuring call.
