After testing today it all worked fine as a replacement for my cable. It's bahaving pretty much as with the cable. On the short trip this morning it didn't want to work on the way home, just stuck trying to connect, but that has happened with the cable once in a while, so put that down to normal issues with AA and phones, head units etc.
The unit seems to run cool and worked flawlessly on the 35 or so minute drive there and back. Just got home and I can report another interesting thing, at least with my phone, the S20+.
As reported earlier I control my wifi via Bixby routines to only be on in certain locations, and I also have a routine to provide a hotspot in the car for my son's iPad to use, and the car connects to it too, but that's pretty redundant I think.
Now I was reading earlier that other people do this and it will be handy to reverse the way AAW connects, to use the wifi from the phone so it can do other things.
As reported earlier, I didn't remove my wifi routine and keep my wifi on always, instead I added a new one to turn wifi on when I connect to the cars BT. This worked fine, AA connects really fast when the car turns on, very good.
Today I've realised that my phone hotspot is still working, my son had his wifi like normal in the car.
So my phone's data is running fine and everything is like it is before.
Except for the drain on my phone in these occasion. My phone was getting hammered and was getting warm as a result and the battery was going down. Normally it was connected by the cable and getting charge so I am really more interested than ever to get an elegant wireless charging setup in my car. European versions of my car have this so I will try again to source those.
This won't be an issue day to day, and even on these trips, but if we go interstate I will just plug my phone into a USB and leave it in the console bin so it can go the distance.
So, an amazing result so far. I have wanted wireless AA for years in cars and charging and I bought my car last year knowing I wouldn't get this but I prefer this model over the new one coming so I hung my hopes on a device like this and finding a wireless charging solution.
It's important to remember that AA is not always perfect, and if you had an issue now and then before in your car, then you might get that again from time to time.
Today also while shoing my mother the setup (she has just ordered a new Skoda with native wireless AA and charging) it happened again that I couldn't hear the Google Assistant. I could speak and I know there is answer, but no sound. A restart of the car and it was back. That happens from time to time in my car, not sure about others. I can tell it's going to happen now because there is no noise to show Google is listening.
Sorry for the long post, but I never got a phone to work with the app, and I didn't try to hard as this is the solution I was looking for. Faster and more reliable and smaller. I stuck mine up out of the way in the forward console and I used the very small cable I already had in my car, about 25cm.
The big dream for me from the team this year is to do what they can update wise with AAW, and if they can make it do Apple Carplay they will corner the market. Possibly easier to do than Android, but I don't know.
My daughter starts learnign to drive next year and her car needs a wireless Carplay solution. Prefer to use these guys than someone else.