How to set or change a Facebook username on a page. 1. Click the "About" section on the left side of your page. 2. Select the "Edit" option next to the section for your page's username. 3.

Instagram makes it super easy to change your username through its mobile app. To make a change you’ll first want to load the app on your Android or iOS device and log in.

Here’s how to do it: Click on “Settings” at the top-right corner of your Facebook home page. In the pull-down menu, click “Account Settings.” Next to “Username,” click on “Change ...