I am sure there is a bunch of discussion on this forum about these dongles if you run a search. I’ve used the Carlinkit with XC60 as well as previous cars. They are a little finicky, but for everyday use, they do generally work.
Once you set up the dongle, get into your car and turn on the car, and without connecting your phone to the car by cable, you’ll have CarPlay pop up. Here is my reality though—for everyday use, listening to Spotify, etc., it works well.
Yet if I am going on a longer drive running Waze or Google Maps, when I need the navigation, it inevitably drops out and won’t come back. I am then left scrambling, unplugging the Carlinkit, plugging in my phone, all while driving. Not ideal.
These are not bulletproof, and the unreliability (for me) means that for longer drives, I’ll plug my phone in the normal way. YMMV.