Mobile Network Support and BandVivo Z6 5G have Dual Nano-SIM Card Slots,Vivo Z6 5G support dual mode based on GSM/CDMA based network providers. Vivo Z6 5G mobile device support GSM 2G Band Frequency at GSM 850,GSM 900,GSM 1800,GSM 1900, Vivo Z6 5G mobile device support CDMA 2G Band Frequency atand Hight Speed 3G Network Band at HSDPA 850,HSDPA 900,HSDPA 1700,HSDPA 2100,Vivo Z6 5G also support LTE based 4G Networks Support at Frequency level LTE 800,LTE 1800,LTE 2600,LTE