What do you make of the Samsung Aviator for USCC which appears to support dual band CDMA/EVDO (cellular, PCS) as well as quad band LTE (BC 2, 4, 5, 12)?
http://www.phonescoop.com/phones/phone.php?p=3638
http://www.samsung.com/us/mobile/cell-phones/SCH-R930DSAUSC-specs