Vertu Signature Touch was officially announced in June 2014, Device released in June 2014Mobile Network Support and BandVertu Signature Touch have Nano-SIM Card Slots,Vertu Signature Touch support all GSM Based network providers. Vertu Signature Touch 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 1700,HSDPA 1900,HSDPA 2100,HSDPA 1800,Vertu Signature Touch also support LTE based