Orbi 960 setup, i.e. Wifi 6E, 1 router + 3 satellites, fully wired backbone, and going from iPhone 14 Pro Max to 15 Pro Max meant that as soon as my iPhone 15 Pro Max jumps from the main router to one of the satellites it loses connection. In my case, turning off 6E on the iPhone doesn't help. Turning off private MAC address doesn't help. Turning Wifi off/on on the iPhone doesn't help. No VPNs running, either. And my "iPad Pro 11" Gen 3" still continues to travel from room to room without losing any signal as my iPhone 14 Pro Max used to.
Initially I blamed Orbi, so went ahead and replaced it with a brand new Eero Max 7 setup, i.e. Wifi 7 (not that it matters for iPhone 15), 4 identical devices (in 1 gateway + 3 extender mode), and guess what? The exact same issue!! Perfect 6Ghz connection to the gateway, but no connection to the extenders. Argh! More correctly, the extenders see the phone connecting at 6Ghz, no problems. And the phone shows it is connected to my network. Just like under Orbi. Yet, the little circle thing keeps spinning forever next to my network name, effectively killing any connectivity, including cellular. This is not okay... Eero has two features: Turn on Legacy Mode in case 6Ghz devices don't work. Didn't help. It also allows to turn off 5Ghz for 10 minutes. Didn't help. Although I am not sure if that actually makes just the gateway go into legacy & 2.4Ghz-only mode or all extenders as well...
I am now walking around the house with my iPhone's wifi off, hoping that the meager AT&T cell signal around me will be enough. When I need the full bandwidth, I go to the room with the Eero gateway, turn on my iPhone's wifi, do my thing, turn it off, and walk away. Hardly the Apple experience of the yesteryear...
I am disappointed that iOS 17.1 did not fix this.
Tuna