Works fine on my Poco F3 (Xiaomi sub-brand) running Android 12. A few issues with getting car to see hotspot, but that may be down to the phone settings shutting that off / not activating it properly when detecting car via BT.
Google assistant works well, WhatsApp only shows new messages received following connection to car, ABRP/ZapMap need to be logged in on phone (with premium subscription) to give all features on car screen, Waze needs to be logged in on phone.
Works great on my Huawei too. As others have mentioned, it only shows recent messages but google assistant is great in my initial testing. Everything works as it should. The only thing I couldn't figure out was how to exit an app. I ended up with both maps and Waze forced open on my phone unable to close either from the phone or the browser. I had to close the connection in order to close it.
Today I noticed the car struggled to connect to the hotspot until I connected to it manually, but once connected is great.
Maybe I'm missing something re closing the app so it's not forced open.