Lenovo Yoga A12 was officially announced in February 2017, Device released in February 2017Mobile Network Support and BandLenovo Yoga A12 have No, (Optional 4G Model) Card Slots,Lenovo Yoga A12 not support any GSM Based network providers.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 Lenovo Yoga A12 is a Tablet, (2 in 1 Tablet And Laptop)