[Q] U.S. Version with Global UMTS?
All the U.S. versions seem to support LTE bands for U.S. carriers, but the same versions do not support global UMTS frequencies. For example, the at&t version (D800) lacks the 900Mhz frequency. The T-Mobile version (D801) lacks the 900Mhz UMTS frequency. The Verizon version (VS980) has all four UMTS frequencies, but lacks LTE band 17 which would enable it to work on at&t's network.
So, is there a version that has a versatile radio similar to the new iphone 5s that has all four UMTS frequencies plus LTE bands 4, 17, etc?