Acer Iconia One 8 B1-820 was officially announced in April 2015 , Device released in April 2015 Acer Iconia One 8 B1-820 made under Iconia.Mobile Network Support and BandAcer Iconia One 8 B1-820 have No Card Slots, and there is no 3G Network Band Support, comes with network handling support with Network settings and work offline with flight Mode.Device Body Design and Display Acer Iconia One 8 B1-820 is a Tablet device