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Google Voice assigns a new, 10-digit phone number to you; this number is used whenever you use Google Voice to make a call.  While using Google Voice won't prevent the person you're calling from seeing your Google Voice number, they won't be able to see your phone's actual number even if they have unmasking services or apps installed. Using Google Voice is a good way to get through to a person who screens blocked numbers without having to reveal your actual number. This app is free for both iPhones and Androids. You can download it by doing the following:   iPhone — Open the {"smallUrl":"https:\/\/www.wikihow.com\/images\/5\/55\/Iphoneappstoreicon.png","bigUrl":"\/images\/thumb\/5\/55\/Iphoneappstoreicon.png\/30px-Iphoneappstoreicon.png","smallWidth":460,"smallHeight":460,"bigWidth":"30","bigHeight":"30","licensing":"<div class=\"mw-parser-output\"><p>I edited this screenshot of an iOS icon.\n<\/p><p>License: <a rel=\"nofollow\" class=\"external text\" href=\"http:\/\/en.wikipedia.org\/wiki\/Fair_use\">Fair Use<\/a><br>\n<\/p><\/div>"} 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.  Android — Open the {"smallUrl":"https:\/\/www.wikihow.com\/images\/1\/1e\/Androidgoogleplay.png","bigUrl":"\/images\/thumb\/1\/1e\/Androidgoogleplay.png\/26px-Androidgoogleplay.png","smallWidth":460,"smallHeight":531,"bigWidth":"26","bigHeight":"30","licensing":"<div class=\"mw-parser-output\"><p>I edited this screenshot of an Android icon\n<\/p><p>License: <a rel=\"nofollow\" class=\"external text\" href=\"http:\/\/en.wikipedia.org\/wiki\/Fair_use\">Fair Use<\/a><br>\n<\/p><\/div>"} 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. Tap OPEN in your phone's app store to do so. You can also tap the Google Voice app icon, which resembles a white phone on a dark-green background, to open it. It's in the middle of the screen. Tap the switch to the right of the account you want to use with Google Voice. If you don't have a Google Account signed into your smartphone, tap Add account, then enter your email address and password. It's in the top-left corner of the screen. A pop-out menu will appear. If prompted to choose a number for your Google Voice account, skip this step and the next two steps. This is in the middle of the pop-out menu. You'll see this option under the "Account" heading near the top of the page. On Android, you'll tap Get a Google Voice number here. It's in the bottom-right corner of the screen. 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. In the list of available phone numbers, look for one you'd like to use. It's to the right of the number you want to use. This option is in the bottom-right corner of the screen. Type in your phone's actual phone number. It's in the bottom-right corner of the screen. Google Voice will send a six-digit code to your phone's Messages app. Do the following:  Minimize the Google Voice app (don't fully close it). Open your smartphone's Messages app. Select the new message from Google. Review the six-digit code in the message. Re-open Google Voice. Type in the six-digit code that you retrieved from the message. It's in the bottom-right corner of the screen. Tap CLAIM when prompted, then tap FINISH when prompted. This will take you to the Google Voice main page. 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:  Tap the Calls tab. Tap the green-and-white dialpad icon in the bottom-right corner. Dial the number you want to call. Tap the green-and-white "Call" button at the bottom of the screen. Wait for a prompt with a different number to appear. Tap Call to place your call.

Summary:
Understand what using Google Voice will do. Download Google Voice. Open Google Voice. Tap GET STARTED. Select a Google Account. Tap ☰. Tap Settings. Tap CHOOSE. Tap SEARCH. Enter a city name. Review the resulting numbers. Tap SELECT. Tap NEXT twice. Enter your phone number. Tap SEND CODE. Retrieve your Google Voice code. Enter your code. Tap VERIFY. Finish claiming your number. Make a call with Google Voice.