Similar issue for me as well, but a little different.
When I first got the phone day 1:
HOME - 3 bars of 4G!!
WORK - 1 bar of 4G.
After the latest OTA update:
HOME - No 4G connection. It sees a network and tries to connect 3 times, then gives up.
WORK - 1 bar of 4G. Faster download speed, but...