# Turn on call blocking

How to turn on HARD’s call blocking on iPhone, step by step. Known scam numbers can’t ring you, and HARD never sees who calls you.

Source: https://hard.fyi/docs/iphone/call-blocking/

1. In HARD, tap **Settings → Call blocking**, then **Open Settings**.
2. In the iPhone’s Settings, go to **Apps → Phone → Call Blocking & Identification** and turn on **HARD**.

![Calls and texts in HARD for iPhone: call blocking off, the steps, Open Settings, and the scam numbers HARD knows](https://hard.fyi/images/docs/iphone-calls-light.webp "Settings → Calls and texts")

## How it works

Known scam numbers can’t ring you, and others get a warning. iOS checks each call against HARD’s list on the phone, so HARD never sees who calls you. Your contacts are never blocked.

**Settings → Calls and texts** shows how many scam numbers HARD knows and when the list was updated. **Is this number legit?** checks a number, or reports one.

![Is this number legit?: a number checked, This is a scam, and what to do](https://hard.fyi/images/docs/iphone-number-check-light.webp "Is this number legit?")

## Questions

### Someone is on the phone right now. What do I do?

If they want money moved, a code read out, or your screen shared: hang up, and call the number on the back of your card or the organisation’s own website. Then open Is this legit? , choose the call option and answer the yes-or-no questions. HARD tells you what it thinks and what to do.