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 1 494 numbers are flagged as spam, backed by a total of 0 community reports. This guide explains how to protect yourself.

Automatic blocking with NoCall

The most convenient protection is the NoCall app, which keeps the database of spam numbers reported by real users on your phone. On the free plan those calls are identified when they ring (a label on iPhone, an alert on Android) and you decide whether to answer; with NoCall Pro they are blocked automatically, with no manual work.

The database is updated constantly and now holds 0 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. NoCall uses the CallKit extension to identify thousands of spam numbers at once and, with Pro, block them automatically.

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.

Check whether a number is spam

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