GSM 850 MHz
The GSM 850 MHz frequency band operates in the range of 824.2 MHz to 849.2 MHz for the uplink (mobile to base) and 869.2 MHz to 893.8 MHz for the downlink (base to mobile). This band is used for GSM technology in North America, including the United States and Canada, and is one of the primary bands for GSM networks in these regions. It is also known as the "Cellular" band and is used by carriers such as AT&T and Verizon in the U.S. The GSM 850 MHz band is not compatible with GSM 900 MHz used in Europe and Asia, requiring a dual-band or multi-band device to operate on different networks.
