B3@20 - very goodEE use Band 20 with 5Mhz bandwidth (LTE) and Band 3 (LTE-A) with 20MHz bandwidth.
Does the use of the lower frequency Band 20 mean that the LHGR isn't a good choice?
Everything is better than WAP LTE internal antennas. LHG is a lot better on B20 too. Or you can install good external antennas on wap lte.