GSM is the common mobile communication standard that currently has the greatest coverage. If your device supports this connection, you can send messages, make calls, and even access the Internet. Upon closer examination, one can conclude that the GSM standard refers to the second generation of mobile Internet, put – 2G.
O alcance da rede não é superior a 120 quilómetros, mas dada a localização atual das torres telefónicas, esta distância é suficiente. A principal desvantagem, devido à qual os fabricantes começaram a instalar módulos 3G e 4G em seus smartphones, é a baixa velocidade de processamento de informações nas redes GSM. Ou seja, a taxa de transferência de dados não excederá o limite de 474,6 kbps.
However, despite the significant disadvantage, the GSM communication standard is characterized by low battery consumption. If you want the phone to work only with GSM networks, then follow this path: “Settings” → “SIM cards and mobile networks” → “SIM card settings” → “Preferred network type” → “2G”.