Its the same on iPhone, or at least, it has been for me, ever since i took delivery of the car in dec of 2018. group texts dont work on iPhone, either, it only replies to a single individual. Additionally, at least from what I remember, you are supposed to be using the stock messaging application.
Its possible to use non stock messaging applications on both platforums, but your "typical" iOS user is likely to be using message ( the stock app) unless they have some glaring reason not to (friends all use some other messaging app, etc). Android users are more likely to be using (or trying to use) something non standard, at least in my experience.
In the car, is where I was talking about. There is a link that goes to the information that
@RayK shared in post number 12. How to get there:
1. In the car, tap the picture of the car on the bottom left hand side of the screen, to open the menus
2. Select the SOFTWARE menu, by tapping it with your finger
3. after selecting SOFTWARE, look at the right side of the screen. There should be a picture of your car there, with some information on it. Depending on what version of software you are on, you may see "Autopilot computer: XXXXXXX" or, alternatively, you can tap the blue words "ADDITIONAL INFORMATION" and that will bring up the screen shared by
@RayK , which also shows what autopilot computer you have.
In any case, others have already described about turning on navigation on autopilot, etc, so I would look into that.