The Carlinkit dongle that I ordered on Amazon finally arrived from Singapore. Overall I was quite impressed with the device. It generally does what I think it promises. You plug the dongle into the CarPlay USB port, connect your phone to the dongle Bluetooth and that's it. Going forward, everything is completely hands-off. The Bluetooth automatically connects each time you get into the car and the CarPlay screen starts. Completely wireless.
A few notes: I found I needed to delete my regular Porsche Bluetooth profile or else there was confusion between the two. Also, there was a bit of a load time for the device each time, so for about 20 seconds each time I got into the car, the screen would show some Mandarin text while it synced up. Once synced, it went right into the CarPlay screen. And it does seem to support the new iOS 13 split CarPlay screen.
On the other hand, I found the following issues:
-Huge battery drain on my phone. I guess I should have expected it, but you need to consider that Apple Maps is always running in the background during a CarPlay session. So I would go through about 10% of my phone batter every 30 minutes or so with the GPS module running.
-Not sure if it is a CarPlay or dongle issue, but incoming calls do not display the caller ID number
-A lot of fighting with Siri trying to get what I wanted to happen. Many talk-to-text messages sent out that I did not intend to. In fact, Siri would often pick up her own voice saying "what do you want to say" as part of my message. And when Siri asked if I was ready to send, I would say NO and she would say "Okay...message sent". That obviously caused a lot of confusion to the recipients!
So in the end, I ended up disconnecting and going back to my Porsche Bluetooth setup. The wireless CarPlay was certainly very cool and a good $120 experiment, but I found the tradeoff of battery drain and no incoming caller ID to outweigh any benefits I gained. In the end, the only benefit with the wireless CarPlay was the ability to press the Siri button on the steering stalk and dial by voice. For longer road trips I would need to plug in anyway for the battery drain, and on my short commute to work, the native Porsche Bluetooth system provides me generally with all I need.
I'm happy to answer any questions for anyone.