The Spam Call Guide

How spam calls work, why you get them, how to block them on iPhone and Android, and how to spot a scam before it costs you.

• How to block spam calls on iPhone and AndroidEvery practical way to block spam calls — built-in settings, carrier tools and call filtering apps — and which one actually stops the calls.
• Why am I getting so many spam calls?Where spam callers get your number, why the calls suddenly increase, and what actually reduces them.
• Robocalls: how automated calls actually workHow automated call systems dial millions of numbers, what happens when you pick up, and how to tell a robocall from a person.
• Spoofed numbers: why caller ID liesHow caller ID spoofing works, why calls appear to come from your own area code, and what to do if your number is being spoofed.
• Silencing unknown callers without missing what mattersWhat the iPhone and Android settings actually do, what you will miss, and how to use them without losing important calls.
• Scam call red flags, and the habit that beats themThe pressure tactics every phone scam shares, the specific claims to distrust, and the one habit that defeats almost all of them.
• Reporting spam calls: where it goes and why it mattersWhich authority to report a spam or scam call to, what information to keep, and whether reporting actually achieves anything.
• Do Not Call registers: what they actually coverHow opt-out registers work in the UK, US, EU and Turkey, what they legally prevent, and why calls continue anyway.