If the pop-up message below: "Android Launcher Update Required." shows up on your phone while you are browsing the web or using a certain app, please do not follow the instructions in it, just ignore it because it is a fake. The fake message was created by cybercriminals to frighten and trick mobile users into visiting malicious websites, downloading malicious apps, visiting phishing websites that steal personal and financial information, or visiting spam websites. If the message popups on your mobile device and prevent you from doing anything else, please press the "Home" button on your mobile device, which will take you to the Home screen. Then, use the "Recent Apps" button to close the browser window or the app that is displaying the fake message. Or, just restart your mobile device.