How to Make a Call Unknown on iPhone

Many iPhone users want to make calls without revealing their phone number. This is useful when you want to protect your privacy or avoid being identified by the recipient. However, making an unknown call on iPhone can be confusing if you don’t know the right settings or methods.

This guide explains how to make a call unknown on iPhone by hiding your caller ID. You will learn multiple ways to block your number, including using built-in iOS settings and carrier codes. This helps you keep your number private when calling others.

How do you hide your caller ID on iPhone?

Hiding your caller ID on iPhone means your phone number will not show on the recipient’s device when you call. iOS provides a built-in setting to toggle caller ID visibility. When enabled, your number appears as “Unknown” or “No Caller ID” to the person you call.

To hide your caller ID, open the Settings app, then go to Phone > Show My Caller ID. Toggle the switch off to disable caller ID. This method works for most carriers and is the easiest way to make your call unknown.

Note that some carriers may not support this feature or may override it. In those cases, you can use carrier-specific codes or third-party apps to block your number.

What prerequisites are required for making a call unknown on iPhone?

iPhone with iOS 10 or later: The caller ID hiding feature is available in recent iOS versions, so ensure your device is updated.
Active cellular service: You need a working SIM card and cellular plan to place calls and use caller ID settings.
Carrier support: Your mobile carrier must support caller ID blocking for the built-in toggle to work properly.
Basic iPhone knowledge: Familiarity with the Settings app and phone calling features helps you configure caller ID options.
Optional carrier codes: Some carriers require dialing special codes before the number to block caller ID on a per-call basis.

How do you make a call unknown on iPhone using carrier codes?

If your carrier does not support the iPhone’s built-in caller ID toggle, you can use carrier codes to block your number for individual calls. These codes vary by country and carrier but commonly include prefixes like *67 or #31#.

To use this method, open the Phone app and dial the code before the phone number you want to call. For example, dialing *67 1234567890 will block your caller ID for that call only.

This approach is useful when you want to hide your number occasionally without changing global settings. However, it requires you to remember and enter the code each time you call.

Check with your carrier for the exact code to use, as it may differ. Some carriers also allow disabling caller ID permanently via account settings.

Step-by-step guide to make a call unknown on iPhone

Step 1: Open the Settings app

Locate and tap the Settings app icon on your iPhone home screen. This is where you configure system and phone options.

Open Settings > Phone

This command guides you to the Phone settings menu where caller ID options are located.

Step 2: Access Show My Caller ID setting

Scroll down and tap on "Show My Caller ID". This option controls whether your number is visible when making calls.

Settings > Phone > Show My Caller ID

This navigates you to the toggle switch that enables or disables caller ID display.

Step 3: Disable Show My Caller ID

Toggle the switch off to hide your phone number when calling. The switch will turn gray indicating the feature is disabled.

Toggle Show My Caller ID to OFF

Disabling this setting makes your calls appear as "Unknown" or "No Caller ID" to recipients.

Step 4: Make a test call

Open the Phone app and dial a number to verify your caller ID is hidden. The recipient should see "Unknown" or no number displayed.

Dial a number and call

This confirms your caller ID is successfully blocked for outgoing calls.

Step 5: Use carrier code for per-call blocking (optional)

If you want to block your number only for specific calls, dial your carrier’s blocking code before the number.

*67 1234567890

This method hides your caller ID for that call without changing global settings.

What are common errors when making a call unknown on iPhone and how do you fix them?

Caller ID toggle is missing or grayed out: This usually means your carrier does not support caller ID blocking. Contact your carrier or use per-call blocking codes instead.
Caller ID still shows despite disabling: Some carriers override iPhone settings. Verify with your carrier if they allow caller ID blocking or if it requires account changes.
Per-call blocking code not working: Ensure you are using the correct code for your carrier and region. Codes like *67 or #31# are common but vary.
Calls fail after entering blocking code: Double-check the format and spacing. Some carriers require no spaces or different prefixes.
Recipient reports seeing your number: Some phone systems or apps may reveal caller info despite blocking. Use a secondary number or VoIP app for stronger privacy.

What are best practices when making a call unknown on iPhone?

Use caller ID blocking sparingly: Frequent unknown calls may be flagged as spam or ignored by recipients.
Inform contacts when necessary: Let trusted contacts know you may call from an unknown number to avoid confusion.
Test caller ID blocking: Make test calls to verify your number is hidden before important calls.
Keep iOS updated: Updates may improve caller ID features and fix bugs.
Check carrier policies: Understand your carrier’s support and limitations for caller ID blocking.

What are alternative methods to make calls unknown on iPhone?

Besides the built-in toggle and carrier codes, you can use third-party apps or services to hide your number. Apps like Google Voice or Burner provide temporary numbers that mask your real phone number.

VoIP apps often allow you to choose what caller ID to display or show no ID at all. This is useful if your carrier does not support caller ID blocking or you want more control.

However, these apps may require account setup and internet connectivity. They also may not work for emergency calls or some local numbers.

Choosing the right method depends on your privacy needs and convenience.

What security risks exist when making calls unknown on iPhone?

Hiding your caller ID can protect your privacy but may also raise suspicion. Some recipients may refuse unknown calls or report them as spam. This can limit communication effectiveness.

Additionally, scammers often use blocked numbers to hide identity, so some networks flag unknown calls. Use caller ID blocking responsibly and avoid illegal or harassing calls.

Also, relying on third-party apps for caller ID hiding may expose your call data to those services. Always review app permissions and privacy policies.

Conclusion

Making a call unknown on iPhone is a straightforward way to protect your privacy by hiding your phone number from recipients. You can use the built-in "Show My Caller ID" toggle in iOS or dial carrier-specific codes for per-call blocking. Understanding your carrier’s support and limitations is key to success.

Use caller ID blocking responsibly and test your settings before important calls. For stronger privacy, consider third-party apps that provide temporary numbers. This guide helps you confidently make unknown calls on iPhone while avoiding common errors and following best practices.

FAQs

Can I hide my caller ID for all calls on iPhone?

Yes, by disabling the "Show My Caller ID" setting in your iPhone’s Phone settings, you can hide your number for all outgoing calls, provided your carrier supports this feature.

Why does my caller ID still show after disabling it?

Some carriers override the iPhone’s caller ID settings. In such cases, you may need to contact your carrier or use per-call blocking codes to hide your number.

What carrier codes can I use to block caller ID?

Common codes include *67 in the US and #31# in Europe. These codes vary by carrier and region, so check with your provider for the correct code.

Are there apps that help make calls unknown on iPhone?

Yes, apps like Google Voice or Burner provide temporary numbers that mask your real number, allowing you to make calls without revealing your identity.

Is it legal to hide my caller ID when calling?

Generally, it is legal to block your caller ID for privacy. However, using it for harassment or illegal activities is prohibited and can have legal consequences.