Rooting your phone allows you to gain privileged access to the operating system, giving you more control over your device. With root access, you can modify system files and settings that are normally inaccessible, enabling you to customize your phone's appearance, remove pre-installed apps, and even install custom ROMs.

Rooting is necessary for certain features because it allows you to perform advanced tasks and install apps that require this elevated level of access. However, it's important to note that rooting your phone also carries some risks, such as potential security vulnerabilities and voiding the manufacturer warranty.

Hope that helps!