OnePlus 7 Pro was officially announced in May 2019, Device released in May 2019Mobile Network Support and BandOnePlus 7 Pro have Dual, (Nano Sim) (Dual VoLTE) Card Slots,OnePlus 7 Pro support all GSM Based network providers. OnePlus 7 Pro mobile device support 2G Band Frequency at GSM 850,GSM 900,GSM 1800,GSM 1900 and Hight Speed 3G Network Band at HSDPA 850,HSDPA 1700,HSDPA 1900,HSDPA 2100,OnePlus 7 Pro also support LTE based 4G Networks Support at Frequency level