👉 The Global System for Mobile Communications (GSM) project is an international standard for mobile telephony that enables voice communication, text messaging, and data services over cellular networks. Developed in the 1980s by a consortium of telecommunications companies, including Ericsson, Motorola, and Siemens, GSM standardized the use of digital technology for mobile communications, offering improved security, reliability, and efficiency compared to analog systems. It operates on a frequency spectrum divided into multiple channels, allowing simultaneous communication between numerous users. GSM supports various data rates, from 0.8 kbps to 2 Mbps, and is the foundation for many modern mobile networks, including 3G, 4G LTE, and 5G, facilitating global interoperability and driving the widespread adoption of mobile technology.