Overview of built-in apps such as Phone, Messaging, Chrome for web browsing, and the Google Play Store for downloading new software. 2. Customization & Interface

Table of Contents * Introduction. * Android Operating System. * Security by design. * Hardware-backed Security. * Verified Boot. * Guide to Securing Android Devices

Adding and organizing widgets, changing wallpapers, and managing multiple home screens.

Steps to connect to Wi-Fi networks and pair Bluetooth devices .

Understanding status icons, managing notifications, and using Quick Settings for immediate toggles like Wi-Fi and brightness.