Acer Iconia Tab 8 A1-840 was officially announced in June 2014, Device released in September 2014Mobile Network Support and BandAcer Iconia Tab 8 A1-840 have No Card Slots,Acer Iconia Tab 8 A1-840 not support any GSM Based network providers.and there is no 3G Network Band Support,there is no flight mode support. Device Body Design and Display Acer Iconia Tab 8 A1-840 is a Tablet device and it have device dimension with . Phone weight including the