I received and installed 3.5.1 last night and used my phone to activate my Gravity with just the phone -- pretty much great and uneventful.
In order to activate Car Play I needed to delete my phone from the Gravity and then exit the connectivity screen, re-enter the connectivity screen and add my iPhone back into the Gravity and follow the prompts to add CarPlay which looks good and seems functional. It is not clear to me if there adjustments that are available for interaction with my Gravity. SO IF ANY OF YOU WOULD LIKE TO SHARE SETUP OPTIONS -- I am very interested!
--Next I tried Apple Music which works but I would LOVE Lossless app for Apple Music
--Next I noticed that while I have many App's on my iPhone 15 and several do appear on the screen, I wondered how can I make some app's like Netflix appear as an option on the Gravity screen?
--I wonder if you can utilize Google maps and CarPlay as an iPhone owner on the Gravity and any insights into this.
Fun times!!!