If you need to change your App Store username for any reason, you can do so right from your device. You can also change your App Store username from the iTunes Store on a Mac or PC. Here's how to change your App Store username on an iPhone, iPad, or iPod touch, and in iTunes on a Mac or PC.
If you need to change your app store username for any reason, you can do so by following these steps: 1. Open the Settings app on your device. 2. Tap on your name at the top of the screen. 3. Tap on the "iTunes & App Store" option. 4. Tap on your existing username. 5. Enter the new username that you want to use. 6. Tap on the "Done" button. 7. Your app store username will now be updated.
If you need to change your app store username for any reason, there are a few different ways to do it. You can change it directly on your device, through the iTunes Store, or by contacting Apple Support. Whichever method you choose, make sure you have your new username and password handy before you begin.