Honlly

Low Frequency Spectrum Band fro LTE:450MHz

At 450 MHz, Band 31 is theoretically attractive as a complementary band for LTE because if offers the potential for very wide area coverage. When the first LTE network went live using 450 MHz in 2014 it was thought that many of the world’s CDMA 450 networks(over 100 of them) would be quickly switched off, and the spectrum re-farmed for LTE. So far, however, 450 MHz is used for LTE only in a few places. GSA has identified ten networks with commercial LTE services using Band 31.