How to block spam calls on your phone

Unwanted sales calls are among the most common phone complaints worldwide. According to NoCall community data, more than 282,339 numbers are flagged as spam, backed by a total of 144,714 community reports. This guide explains how to protect yourself.

Automatic blocking with NoCall

The most effective protection is automatic blocking. The NoCall app keeps an updated database with more than 282,339 spam numbers reported by real users. After you install the app, those numbers are blocked on your phone automatically — with no manual work.

The database is updated constantly and now holds 144,714 community reports. Every time someone reports a number, the whole community benefits.

Block a number manually on iPhone

1. Open the Phone app and go to Recents.
2. Tap the information icon (i) next to the number you want to block.
3. Scroll down and choose Block this Caller.
4. Confirm by tapping Block Contact.

To manage blocked numbers: Settings → Phone → Blocked Contacts.

Limitation: iOS only lets you block numbers one by one. That is why we recommend NoCall, which blocks thousands of numbers automatically using the CallKit extension.

Block a number manually on Android

1. Open Google's Phone app or your manufacturer's dialer.
2. Open Call history.
3. Long-press the number you want to block.
4. Choose Block number or Add to blacklist.

On Samsung: enable protection under Phone → Settings → Caller ID and spam protection.

Common spam call types

According to NoCall community reports, the most frequent categories are:

• Telemarketing: Sales calls from telecom, energy, and insurance companies.
• Scams: Impersonation of banks, government bodies, and courier firms.
• Debt collection: Persistent calls from debt-recovery companies.
• Surveys: Automated calls with unsolicited surveys.

Recently reported numbers

These are some of the latest numbers flagged as spam by the community. Tap one to see its full report with community votes and comments.

Check whether a number is spam

Got a suspicious call? See whether others have already reported it: