@Joseph-TP No, I do not have other phones available for test. I have specific case where I needed to use spare ap in client mode and found this problem and solved it as described. Your interpretation...

@Joseph-TP From pictures below. 1-You start to turn on and configure hotspot while connected to some network also- common case. 2-open hotspot, setup, 3-there is no possibility to choose band. As...

With default settings, last versions of android wifi hotspot do not disable android wifi client mode. If client mode use 5g network, hotspot automaticaly use 5g and 2.4g/5g selection is not visible...