A digital communication form transmitted via cellular networks and processed by mobile operating systems, it enables short alphanumeric exchanges between devices. For instance, a user sending “Hello” from a smartphone to another recipient’s device exemplifies this communication. The capability is fundamental to modern mobile phone utility.
Its value lies in facilitating instant peer-to-peer and application-to-person communication. Historically, it represented a cost-effective alternative to voice calls. It continues to be a ubiquitous tool for alerts, notifications, two-factor authentication, and person-to-person correspondence. This functionality is deeply integrated into mobile operating systems and a cornerstone of numerous applications.