What are examples of GSM?

GSM, or Global System for Mobile Communications, is a standard used for mobile telecommunications. Examples of GSM services include voice calls, SMS (Short Message Service), and mobile data services like GPRS (General Packet Radio Service) and EDGE (Enhanced Data rates for GSM Evolution). GSM networks are widely used worldwide, providing connectivity for devices such as smartphones and mobile hotspots. Additionally, GSM technology underpins SIM cards, which allow users to access mobile services on compatible devices.