All Netcom mobile phones can support the 2G 3G 4G networks of the three major operators, and can switch mobile phone cards to access the Internet according to their own needs.
The network standards used by the three major operators are as follows:
China Telecom: CDMA, CDMA2000, TD-LTE, FDD-LTE.
China Unicom: GSM, WCDMA, TD-LTE, FDD-LTE
China Mobile: GSM, TD-SCDMA, TD-LTE, FDD-LTE.