The inability to remove a pre-installed application from a mobile device is often due to its designation as a system app by the device manufacturer or mobile carrier. These applications are integrated deeply into the operating system and deemed essential for device functionality, as perceived by the provider. Attempting to remove these applications through standard means, such as dragging the icon to a trash can or using the application manager, will typically prove unsuccessful.
This practice serves multiple purposes for manufacturers and carriers. It ensures certain functionalities, like access to proprietary services, remain available to the user. It also allows for brand visibility and the promotion of affiliated services. Historically, this situation arose from partnerships between application developers and device providers seeking to bundle services and create a more comprehensive user experience from the outset.