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How to Call With Your Number Blocked

Updated 2026-08-24 · 960 words

You can often hide your number when calling by using your carrier’s one-call blocking prefix or by turning off caller ID in your phone settings. Caller ID blocking can prevent your number from appearing on an ordinary call, but availability varies and it does not guarantee anonymity.

What are the ways to block your number before a call?

Caller ID is the information sent with a call to identify the caller’s number and, in some cases, a name. If you want to know how to make a call and block your number, there are three common options:

  • Enter a carrier-supported blocking prefix before the number you are calling. This normally affects only that call.
  • Turn off caller ID in the Phone settings on an iPhone or Android device. This may hide your number on later calls until you turn the setting back on.
  • Ask your carrier whether it offers caller ID blocking as an account feature. The carrier may control the feature when the phone does not show a setting.

The available method depends on your carrier, account, device, and region. If a setting or prefix does not work, contact your carrier through its verified support channel instead of trying unverified dialing codes.

How do you hide caller ID on an iPhone?

On many iPhones, the caller ID control is located in the settings for the Phone app. Menu wording and placement can change with the installed iOS version or carrier configuration.

  1. Open Settings.
  2. Select Apps, then Phone. On some iOS versions, Phone appears directly in Settings.
  3. Select Show My Caller ID.
  4. Turn off Show My Caller ID.
  5. Place the call and check whether the recipient sees a private, blocked, or unknown caller label.

If Show My Caller ID is missing, gray, or cannot be changed, the carrier may control it. Restarting the iPhone can clear a temporary settings problem, but it cannot remove a carrier restriction. Ask the carrier which blocking options are supported on your line.

Remember to turn the setting on again when you want people to recognize your calls. Some recipients automatically reject calls without visible caller ID.

How do you hide caller ID on Android?

Android phones usually place caller ID controls inside the Phone app’s calling-account or supplementary-service settings. The exact names differ among Samsung, Google, Motorola, and other manufacturers, as well as between Android versions.

  1. Open the Phone app.
  2. Open its menu and select Settings.
  3. Look for Calling accounts, Calls, Supplementary services, Additional settings, or a similar option.
  4. If the phone has more than one SIM, select the SIM or calling account you will use.
  5. Select Caller ID, then choose the option to hide your number.
  6. Make a test call to a person who has agreed to help you check the result.

If the menu is absent or the choice is disabled, the carrier or account type may not support device-level blocking. Search the phone’s Settings app for “caller ID,” check the device maker’s built-in help, or ask the carrier about the correct method for that line.

How do you block your number for one call?

One-call caller ID blocking works by placing a carrier-recognized prefix immediately before the destination number. In the United States, many carriers use *67 for ordinary calls, but that prefix is not supported in every situation, network, or location.

  1. Verify the correct one-call blocking prefix with your carrier.
  2. Open the Phone app and keypad.
  3. Enter the verified prefix, followed immediately by the complete number you want to call.
  4. Place the call normally.
  5. Use the prefix again for each later call that you want to block.

This is often the simplest answer to how to block your number for one call because it does not permanently change the phone setting. Save neither the prefix nor a modified contact entry until you know the method works correctly on your line.

Why may your number still appear when you call?

A request to hide caller ID is not a promise that every recipient will see a blocked number. Your number may still be available or displayed in situations where blocking is restricted, overridden, or unsupported.

  • Your carrier, account type, or calling service may not support caller ID blocking.
  • The recipient’s carrier, phone system, or account settings may handle blocked calls differently.
  • Toll-free services may receive identifying information needed to route or process a call even when ordinary caller ID is blocked.
  • Emergency services may receive your number and location information where required for emergency response.
  • Calls made through apps, business systems, Wi-Fi calling services, or internet-based calling tools may use separate caller ID rules.
  • A saved contact name, previous message thread, voicemail greeting, or your voice may still identify you.

Caller ID blocking changes what may appear on the recipient’s screen; it does not make a call anonymous. Do not rely on it to conceal identity from carriers, emergency services, authorities acting through lawful procedures, or systems that keep call records.

How do you turn caller ID back on?

If you changed an iPhone or Android setting, return to the same Caller ID or Show My Caller ID menu and choose the option to show your number. On Android, make sure you change the setting for the correct SIM or calling account.

If you used a one-call prefix, no device change is normally needed because the blocking request applied only to that call. Dial the next number normally without the prefix.

If a carrier feature blocks your number on every call, use the carrier’s verified account controls or support channel to remove it. After restoring caller ID, make a test call to someone you trust. If your number remains blocked, restart the phone, confirm that the right SIM is active, and ask the carrier to check the line’s caller ID setting.