If you want to sign out of the Outlook app on your iPhone, there are a few different ways to do it. The first way is to go to the main menu in the app and select “Sign Out.” If you want to sign out of the app completely, you can press and hold on the home button until it goes off screen, then press and hold on “Sign Out.” You can also use the multitasking feature on your iPhone to close out of the Outlook app and then reopen it again. Just swipe up from the bottom of your screen and tap “Outlook” in the list of apps. ..