Lenovo Yoga Tablet 2 Pro WiFi was officially announced in October 2014, Device released in October 2014Mobile Network Support and BandLenovo Yoga Tablet 2 Pro WiFi have No, (Optional Sim Card Version) Card Slots,Lenovo Yoga Tablet 2 Pro WiFi 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