HTC One M8s was officially announced in April 2015, Device released in May 2015 HTC One M8s made under One Series.Mobile Network Support and BandHTC One M8s have Nano-SIM Card Slots,HTC One M8s support all GSM Based network providers. HTC One M8s 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 900,HSDPA 1900,HSDPA 2100,HTC One M8s also support LTE based 4G Networks Support at Frequency