Acer Iconia W4 3G was officially announced in May 2014 , Device released in May 2014 Acer Iconia W4 3G made under Iconia.Mobile Network Support and BandAcer Iconia W4 3G have Yes Card Slots, Acer Iconia W4 3G support all GSM Based network providers. Acer Iconia W4 3G mobile device support 2G Band Frequency at GSM 900,GSM 1800,GSM 1900 and Hight Speed 3G Network Band at HSDPA 850,HSDPA 2100, there is no flight mode support.