The ability to access cellular data services while outside of one’s primary network coverage area on an Android device is a crucial functionality. For example, a user traveling internationally can maintain internet connectivity, albeit potentially incurring additional charges, through agreements between their mobile carrier and networks in the visited country.
This function enables uninterrupted communication, access to location-based services, and the maintenance of productivity while mobile across geographical boundaries. The development of this feature has paralleled the expansion of global travel and the increasing reliance on mobile data for both personal and professional use.