How To Block Your Number When Calling

Blocking your phone number hides your caller ID so the person you’re calling sees "Unknown" or "Private Number" instead of your name and number. Whether you want privacy for a single call or all calls, here’s how to block your number on iPhone, Android, and landlines in 2026.

Method 1: Dial *67 Before the Number (Any Phone)

The fastest way to hide your caller ID for a single call:

1. Open your phone’s dialer
2. Dial 67 followed by the full phone number (e.g., 67-555-123-4567)
3. Press Call
4. The recipient sees "Private Number," "Unknown," or "Blocked" instead of your number

This works on any phone — iPhone, Android, or landline — and only hides your number for that one call. Your next call will show your number normally.

Method 2: Hide Caller ID on iPhone (All Calls)

To permanently hide your number on every outgoing call:

1. Open Settings
2. Tap Phone
3. Tap "Show My Caller ID"
4. Toggle it Off

All outgoing calls now show as "Unknown" to recipients. To show your number again, toggle it back on.

Note: Some carriers may not support this setting. If the option is grayed out, contact your carrier or use *67 instead.

Method 3: Hide Caller ID on Android (All Calls)

Samsung Galaxy:

1. Open the Phone app
2. Tap the three dots (⋮) → "Settings"
3. Tap "Supplementary services" (or "More settings")
4. Tap "Show my caller ID"
5. Select "Hide number"

Google Pixel / Stock Android:

1. Open the Phone app
2. Tap the three dots → "Settings"
3. Tap "Calling accounts" → select your SIM
4. Tap "Additional settings"
5. Tap "Caller ID"
6. Select "Hide number"

Method 4: Contact Your Carrier

You can request a permanent caller ID block through your carrier:

• AT&T: Dial *61 to enable per-line blocking, or call 611
• T-Mobile: Call 611 or go to T-Mobile.com → account settings
• Verizon: Call *611 or manage through My Verizon app
• Sprint/T-Mobile: Call customer service at 611

Carrier-level blocking hides your number on every call without needing *67 or phone settings. To temporarily unblock for a single call, dial *82 before the number.

How To Unblock Your Number for One Call

If you have permanent caller ID blocking but need to show your number for one specific call:

• Dial 82 followed by the phone number (e.g., 82-555-123-4567)
• Your caller ID appears normally for just that call

This is useful when calling businesses, doctor’s offices, or anyone who doesn’t answer unknown numbers.

Will Blocking My Number Always Work?

In most cases, yes. However:

• Toll-free numbers (800, 833, 888, etc.) can still see your number — caller ID blocking doesn’t work for toll-free calls
• 911 and emergency services always see your real number regardless of blocking
• Some businesses use services that reject or unblock hidden numbers
• Certain carriers in other countries may not support *67

How To Know If Someone Blocked Their Number When Calling You

If you receive calls from "Unknown," "Private Number," or "No Caller ID":

• The caller used *67 or has caller ID blocking enabled
• You can’t directly reveal the number
• Silence Unknown Callers (iPhone: Settings → Phone) or spam filters (Android) can send these calls to voicemail automatically
• Third-party apps like TrapCall claim to unmask blocked numbers, but results vary

Tested on iPhone 16 (iOS 18.3), Samsung Galaxy S25 (Android 15), and Google Pixel 9 across AT&T, T-Mobile, and Verizon networks. Last updated March 2026 by the DevX editorial team.

More How-To Guides From DevX

• How To Block a Number on iPhone
• 833 Area Code: Who Is Calling?
• How To Forward Calls on Android
• How To Set Up Voicemail on Android
• How To Delete Search History

Editorial Staff