Mobile Network Support and BandHonor 30S have Dual SIM (Nano-SIM dual stand-by) Card Slots,Honor 30S support dual mode based on GSM/CDMA based network providers. Honor 30S mobile device support GSM 2G Band Frequency at GSM 850,GSM 900,GSM 1800,GSM 1900, SIM 1 & SIM 2, Honor 30S mobile device support CDMA 2G Band Frequency at CDMA 800, TD-SCDMAand Hight Speed 3G Network Band at HSDPA 850,HSDPA 900,HSDPA 1900,HSDPA 2100,HSPDA 800,1700(AWS),Honor 30S also support LTE based