Well - DUH! Thanks! (Toldja it was a brain-fart condition! ;) )
Originally, regular LTE wasn't even considered true "4G".
LTE-Advanced would be true "4G", not 4.5G. I'm not sure what would be 4.9G, but it's all ridiculous marketing drivel.
Who cares how...
Yep, according to the last link "First unveiled by Huawei in October 2014, 4.5G has since been standardized by 3GPP as LTE-Advanced Pro."
This first article expands the G creep buzzwords but...
Wifi auto connect
Did you try restarting the phone ?