Network standard: It can support mobile/Unicom/telecom 4G+/4G/3G/2G.

4G network standard:

Main card: Mobile 4G(TDD-LTE)/ Unicom 4G(TDD-LTE/FDD-LTE)/ Telecom 4G(TDD-LTE/FDD-LTE).

3G network standard:

Main card: Mobile 3G(TD-SCDMA)/ Unicom 3G(WCDMA)/ Telecom 3G(CDMA2000).

Supplementary card 1: Telecom 3G(CDMA2000)

2G network standard:

Main card: Mobile 2G/ Unicom 2G(GSM)/ Telecom 2G(CDMA 1X)

Daughter card 1: mobile 2G/ Unicom 2G(GSM)/ telecom 2G(CDMA 1X)

Remarks: Telecom+Telecom is not supported, and the secondary card can use mobile 2G/ Unicom 2G to access the Internet.