One of the most effective types of malware for phones is malicious launchers that take control of your device’s interface. In addition to limiting your phone’s capabilities, they can potentially track everything you do on the device. They’re also likely to cause performance issues, such as poor battery life. If you experience odd symptoms like these, the first place you should check is your phone’s launcher. If you don’t recognize it, switch back to the default launcher and then uninstall the malware. Note that you can’t uninstall this type of malware while it’s set as your default launcher, so the former step is necessary.