Samsung Ativ Odyssey SCH-R860U Gray (US Cellular) Display: 4.0 inches (~58.3% screen-to-body ratio) LTE: Bands 2/4/5/12; CDMA 1x/EVDO Rev A: 800/1900 MHz Internal Memory: 8 GB, 1 GB RAM - Card Slot: microSD, up to 64 GB Camera: 5 MP, autofocus, LED flash OS: Windows