All guides
Stop spam calls on every phone
Pick your phone. Each guide shows the exact steps, checked against the current software, and what each setting can’t do.
Turn on Call Screening, the Spam filter and blocking on iPhone, with the exact Settings paths for iOS 27 and iOS 26, and what each one can’t do.
iPhone call screeningHow to use the iPhone call screeneriPhone’s built-in call screener (iOS 26 and 27) answers unknown numbers and asks who is calling and why. How to turn it on, how it works, and its limits.
Silence unknown callersHow to silence unknown callers on iPhoneStop unknown calls on iPhone: where Silence Unknown Callers is on iOS 27, 26, 18 and 17, what it does, and why your doctor might end up in voicemail.
AndroidHow to stop spam calls on AndroidTurn on spam filtering, Call Screen and blocking in the Google Phone app (Pixel and most Android phones), step by step, with what each setting can’t do.
Block calls on AndroidHow to block spam calls on AndroidBlock spam and scam calls automatically on Android, block a single number, and block hidden numbers, on Google Phone and Samsung Galaxy phones.
Samsung GalaxyHow to stop spam calls on a Samsung GalaxyTurn on Caller ID and spam protection, call screening, scam detection and blocking on a Samsung Galaxy phone, step by step for One UI 8.5 and 9.
CarriersTurn on your carrier’s free spam call blockingVerizon Call Filter, AT&T ActiveArmor and T-Mobile Scam Shield block or label spam calls for free on the network. How to turn each one on, and what the paid upgrades add.
LandlineHow to stop spam calls on a landlineStop spam calls on a home phone: Anonymous Call Rejection (*77), call block (*60), your provider’s free spam filter, the Do Not Call Registry and call-blocking devices.
Do Not Call RegistryDoes the Do Not Call Registry stop spam calls?What the National Do Not Call Registry stops and what it doesn’t, how to register (free, never expires), and where to report calls that ignore it.
Spam textsHow to stop spam textsFilter and report spam texts on iPhone (Screen Unknown Senders, iOS 26 and 27) and Android (Google Messages spam protection), and forward them to 7726.