Android provides a mode enabling users to boot up into a mode where only preinstalled system apps are allowed to run and all third-party apps are disabled. This mode, known as “Safe Boot Mode”, provides the user the capability to uninstall potentially harmful third-party apps.
Android device implementations are STRONGLY RECOMENDED to implement Safe Boot Mode and meet following requirements:
Device implementations SHOULD provide the user an option to enter Safe Boot Mode from the boot menu which is reachable through a workflow that is different from that of normal boot.
Device implementations MUST provide the user an option to enter Safe Boot Mode in such a way that is uninterruptible from third-party apps installed on the device, except for when the third party app is a Device Policy Controller and has set the UserManager.DISALLOW_SAFE_BOOT flag as true.
Device implementations MUST provide the user the capability to uninstall any third-party apps within Safe Mode.