A rooted device is a smartphone or tablet, typically running Android, where the user has obtained root or superuser access. This process, known as 'rooting,' allows users to bypass manufacturer and carrier restrictions, enabling them to modify system files, uninstall pre-installed apps, and install specialized software. While rooting provides greater control and customization, it also exposes the device to significant security risks. Malicious apps can exploit root access to steal data or damage the system. Rooting may also void warranties and prevent the use of some official services or updates. Users should weigh the benefits and risks before rooting their devices.