On my Iphone I have installed the HA Home assistant companion 1.5.1(3) and also 2.0.0 (46)
For awhile now I have had copies of the same Iphone showing under the Integrations screen. The information in both are different. The one on the right showing battery level 2 never changes. it all ways says the battery is at 98%.
Did you ever find a solution to correctly removing multiple iPhone devices showing up in HA? I currently have 3 devices using the same host name of my single iPhone.