How security works in Android phones
Guest writer (and friend) Mike Warner chips in with clarification on things that I (and almost everyone else) gets wrong about Android security... In Android there are three levels of security and updates to functionality. From the highest to lowest levels we have: Google Play Services Google Play System Update … and the (often monthly) Android Security Update Google Play Services implements all the Google developed services, such as App Notifications, Location, Advertising, Google Pay and Mapping and is updated by the Google Play Store automatically to fix any security issues or add new functionality. Google Play Services is distributed only to Google Certified Android devices, so some Chinese phones like Huawei and devices running forks of Android, like Amazon Fire tablets, do not contain this module. Without Google Play Services, the OEM has to provide their own App Store and replace the Google defined services with their own set of services to ensure that Android apps expecting th