Lühisõnumite

Lühisõnumite, more commonly known as SMS (Short Message Service), are text-based messages transmitted over cellular networks. These messages are typically limited to a certain character count, originally 160 characters, although modern systems and concatenation allow for longer messages. SMS technology was developed in the 1980s and became widely adopted with the rise of mobile phones in the 1990s.

The primary function of lühisõnumite is for brief, asynchronous communication. They can be sent between any two mobile phones, regardless of carrier, though international messaging may incur additional charges. Beyond personal conversations, SMS has found utility in various applications, including sending alerts, notifications, two-factor authentication codes, and marketing messages. The simplicity and directness of SMS have ensured its continued relevance even with the advent of more sophisticated messaging platforms. The underlying technology relies on the signaling channels of the mobile network, allowing messages to be sent and received even when a voice call is not active.