GSM (Global System for Mobile Communications)

GSM, or Global System for Mobile Communications, is a standard used for mobile networks worldwide. It enables mobile phones to connect and communicate by converting voice calls and text messages into digital data. Launched in the 1990s, GSM introduced features like SIM cards, which store user information and allow for easy switching between devices. GSM networks operate on specific frequency bands, ensuring reliable communication. Today, it's essential for providing mobile services, allowing users to make calls, send texts, and access the internet on their phones, contributing to global connectivity.