Block it free
Block spam calls for free
You don't need to pay anyone to cut most spam. There are four free layers — your phone, your carrier, the federal registry, and your own habits. Stack all four and the flood becomes a trickle. These guides cover every one, step by step.
Most "how to stop spam calls" articles are a paywall with an intro. This is the whole free stack, honestly told — including what each layer misses, because every one of them has a gap.
The four free layers
- Device layer — settings already on your iPhone or Android that silence or filter unknown callers. Five minutes, zero dollars.
- Carrier layer — AT&T, Verizon, and T-Mobile all run free network-level spam filters. Most people never turn them on.
- Registry layer — the National Do Not Call list stops the legal telemarketers and gives the FTC ammunition against the rest.
- Behavior layer — never press a key, never say "yes," never call back a missed unknown number. Your habits decide whether your number gets marked "live" and resold.
The honest catch: every free tool works off a list of numbers already reported. A scammer with a fresh spoofed number sails past all of them, and the nuclear option — silencing every unknown caller — also silences the new doctor's office and the plumber calling you back. That gap is exactly what conversational screening closes: Spam Slayer answers the unknown call, figures out human-or-robot in two exchanges, and only rings you for real people.
The guides
Block spam calls on iPhone — freeEvery free iPhone setting for stopping spam calls: Silence Unknown Callers, Live Voicemail, number blocking, text filtering, and the trade-offs Apple doesn't explain.Read the guide →Block spam calls on Android — freeFree Android spam-call blocking: Google's Caller ID & spam filter, Pixel Call Screen, Samsung Smart Call, and blocking unknown numbers — with the honest limits of each.Read the guide →AT&T ActiveArmor — the free setupHow to set up AT&T ActiveArmor's free spam blocking: fraud call blocking, spam labels, nuisance-call controls — what the free tier includes and what it misses.Read the guide →Verizon Call Filter — what free actually blocksVerizon Call Filter free tier explained: spam detection, risk-level auto-blocking, and reporting — plus what Plus adds and where the filter falls short.Read the guide →T-Mobile Scam Shield — free setupT-Mobile Scam Shield free tier: Scam ID, Scam Block, and caller ID — how to turn everything on, the #662# shortcut, and the calls it can't catch.Read the guide →Stop spam texts — the free playbookHow to stop spam texts free: forward to 7726, filter unknown senders on iPhone and Android, spot the fake-toll and wrong-number scams, and report to the FTC.Read the guide →Does the Do Not Call list actually work?The honest answer on the National Do Not Call Registry: what it legally stops, why scammers ignore it, and why you should register anyway.Read the guide →Stop being a target in the first placeSpam isn't random: your number is bought and sold. Data-broker opt-outs, why the calls spiked, neighbor spoofing explained, and how to stop SIM-swap scams.Read the guide →Weaponize your spam callsBlocking is defense. This is offense: route spam calls to an AI crew that keeps scammers talking, listen in live, and turn every call into a shareable clip.Read the guide →