Global System for Mobile communication is a digital mobile network. It is broadly utilized by cell phone clients in Europe and different regions of the planet. The Global System for Mobile Communications (GSM) is a standard created by the European Telecommunications Standards Institute. It works at either the 900 megahertz (MHz) or 1,800 MHz frequency band. GSM digitizes and compresses information, at that point, transmitting it down a channel with two different streams of user data.