Mobile Network Support and BandHonor Play 4T Pro have Dual Nano-SIM Card Slots,Honor Play 4T Pro support dual mode based on GSM/CDMA based network providers. Honor Play 4T Pro mobile device support GSM 2G Band Frequency at GSM 850,GSM 900,GSM 1800,GSM 1900, SIM 1 & SIM 2, Honor Play 4T Pro mobile device support CDMA 2G Band Frequency atand Hight Speed 3G Network Band at HSDPA 850,HSDPA 900,HSDPA 1900,HSDPA 2100,HSPDA 800,1700(AWS),Honor Play 4T Pro also support LTE based