The ability to redirect incoming telephone calls to another number is a core function of mobile operating systems. This feature allows users to ensure they receive important communications even when they are unable to answer their primary device. For example, a user might forward calls from their iPhone to a landline or alternate mobile phone when traveling internationally to avoid roaming charges.
This functionality is important for maintaining accessibility and ensuring business continuity. It enables users to manage their communications efficiently, preventing missed opportunities and maintaining a consistent point of contact. Historically, this was a carrier-specific service; however, modern mobile operating systems have integrated this feature directly into the user interface, providing greater control and convenience.