This wikiHow teaches you how to prevent people you call from seeing your name and number. Keep in mind that, if you succeed in blocking your caller ID on the other person's line, they're unlikely to pick up; additionally, many...
Method 1 of 2:
Using a Blocking Code
Understand how a blocking code works. If you just need to block your caller ID for one call, you can add a prefix to the number when dialing it to temporarily block your caller ID. You'll need to enter this prefix whenever you call the number to continue blocking your caller ID.
Figure out your block code. If you have a GSM phone in the United States (e.g., most Androids), you'll usually use the code #31#, and other U.S. providers will usually work with the notorious *67 code. Other codes you can use include the following:
Open your phone's dialer app. Tap the Phone app icon to do so. You may also need to tap the dialpad tab to bring up the keypad.
Type in your code. Use the dialpad to enter the three- or four-character code you selected earlier.
Type in a 10-digit phone number. Without pressing the "Call" button, enter the entire phone number you want to call.
Press the "Call" button. Doing so will mask your caller ID on the other person's phone.
Method 2 of 2:
Using Google Voice
Understand what using Google Voice will do. Google Voice assigns a new, 10-digit phone number to you; this number is used whenever you use Google Voice to make a call.
Download Google Voice. This app is free for both iPhones and Androids. You can download it by doing the following:
App Store, tap Search, tap the search bar, type in google voice and tap Search, tap GET next to the Google Voice app, and enter your Touch ID or Apple ID password when prompted.
Play Store, tap the search bar, type in google voice, tap Google Voice in the drop-down results, tap INSTALL, and tap ACCEPT if prompted.
Open Google Voice. Tap OPEN in your phone's app store to do so.
Tap GET STARTED. It's in the middle of the screen.
Select a Google Account. Tap the switch to the right of the account you want to use with Google Voice.
Tap ☰. It's in the top-left corner of the screen. A pop-out menu will appear.
Tap Settings. This is in the middle of the pop-out menu.
Tap CHOOSE. You'll see this option under the "Account" heading near the top of the page.
Tap SEARCH. It's in the bottom-right corner of the screen.

Enter a city name. Tap the search box at the top of the screen, then type in the name of the city (or a ZIP code) from which you want to use a number.

Review the resulting numbers. In the list of available phone numbers, look for one you'd like to use.

Tap SELECT. It's to the right of the number you want to use.

Tap NEXT twice. This option is in the bottom-right corner of the screen.

Enter your phone number. Type in your phone's actual phone number.

Tap SEND CODE. It's in the bottom-right corner of the screen. Google Voice will send a six-digit code to your phone's Messages app.
Retrieve your Google Voice code. Do the following:
Enter your code. Type in the six-digit code that you retrieved from the message.

Tap VERIFY. It's in the bottom-right corner of the screen.

Finish claiming your number. Tap CLAIM when prompted, then tap FINISH when prompted. This will take you to the Google Voice main page.
Make a call with Google Voice. When calling, Google Voice will give you another number to call; between this number and the one that Google Voice assigns to your account, the actual number you're calling won't be able to see your true number. To make a call, do the following:Update 24 March 2020
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