Samsung Galaxy Book 10.6 W627 was officially announced in February 2017, Device released in May 2017 Samsung Galaxy Book 10.6 W627 made under Galaxy Series.Mobile Network Support and BandSamsung Galaxy Book 10.6 W627 have Yes, (Optional WiFi Model) Card Slots,Samsung Galaxy Book 10.6 W627 support all GSM Based network providers. Samsung Galaxy Book 10.6 W627 mobile device support 2G Band Frequency at GSM 900,GSM 1900 and Hight Speed 3G Network Band at HSDPA 850,HSDPA 900,HSDPA