Thanks for the update il have to contact dealer but not sure if i buy Connect it will work ? I cant believe i can get car play in a ford transit but not my porsche ??718 are only capable of hard-wired CarPlay; so don't waste your time trying to set it up any other way.
Guessing the dealer was incorrect.
Almost 100% sure it's the armrest USB port that does CarPlay. At least that's how it is in my car and other cars whenever the subject matter comes up here.
Porsche's configurator used to say that adding CarPlay would remove the 12v connection and replace it with a USB connection in the armrest; and also for some reason remove the AUX connection in the glovebox. They've changed it now. Now (since 2019 or 2020) when you select "Navigation including Porsche Connect," it says: "USB interface instead of 12-v socket in center console storage compartment. Deletion of AUX interface in the glove compartment." And CarPlay is now (since 2019) a stand-alone option -- which incidentally makes a ton more sense. But anyways, I believe in 2017 and 2018 for you to have CarPlay the car had to come with either Connect, or more likely Connect+ -- although I'm still struggling to figure out the difference between the two.