any access technology may be used
only 2G-type (GPRS and EDGE) technologies may be used
4G/LTE-type technologies are preferred but 3G/2/-type technologies may be used as a fallback
2G-type technologies are preferred but 3G-type technologies may be used as a fallback
3G-type technologies are preferred but 2G-type technologies may be used as a fallback
only 4G/LTE type technologies may be used
only 3G-type (UMTS and HSPA) technologies may be used
#NMSettingGsmNetworkType values indicate the allowed access technologies the device may use when connecting to this network.