HTC M8 was officially announced in March 2014, Device released in March 2014 HTC M8 made under One Series.Mobile Network Support and BandHTC M8 have Nano-SIM Card Slots,HTC M8 support dual mode based on GSM/CDMA based network providers. HTC M8 mobile device support GSM 2G Band Frequency at GSM 850,GSM 900,GSM 1800,GSM 1900, HTC M8 mobile device support CDMA 2G Band Frequency atand Hight Speed 3G Network Band at HSDPA 850,HSDPA 900,HSDPA 1700,HSDPA 1900,HSDPA 2100,