Sony Xperia Z4v was officially announced in June 2015 , Device Expected to Release in and it was not yet officially released, Sony Xperia Z4v made under Xperia.Mobile Network Support and BandSony Xperia Z4v have Nano-SIM Card Slots, Sony Xperia Z4v support all GSM Based network providers. Sony Xperia Z4v 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