How to Block Spam Calls on Android and iPhone (2026 Guide)

Spam and scam calls waste time and can be dangerous. Here is how to block spam calls on Android and iPhone using free built-in tools.

How to Block Spam Calls on Android

1. Open the Phone (Google Phone) app → Settings → Caller ID & spam.
2. Turn on Filter spam calls.
3. To block one number: open Recents, tap the number → Block / report spam.
4. Samsung phones: Phone app → Settings → Block numbers → turn on “Block unknown/private numbers”.

Block Spam Calls on iPhone

1. Go to Settings → Apps → Phone → Silence Unknown Callers and turn it on.
2. To block a number: open Recents → tap ⓘ → Block this Caller.
3. Use Call Blocking & Identification in Phone settings to enable trusted blocking apps.

Block Spam on WhatsApp

• WhatsApp → Settings → Privacy → Calls → turn on Silence unknown callers.
• Block and report any number that sends scam links.

Use Your Mobile Network’s Tools

Many mobile networks offer free spam filtering or let you report scam numbers. In the UK and USA you can forward scam texts to 7726. In Pakistan, scam calls can be reported to the PTA complaint portal.

Safety Tips

• Never share OTP codes or bank details on a call.
• If a caller claims to be your bank, hang up and call the number on your card.
• Do not call back unknown international numbers.

Final Thoughts

Turn on spam filtering and silence unknown callers today – it takes two minutes and stops most spam calls before they reach you.