Hey,
Connecttion to phone is wired or wireless for carplay or android auto. Both work, but the wireless has the usual delay b4 connecting. You can also use the system as a standalone unit/tablet, but android auto is just easier for everyday life. Using the standalone system gives you all the usual play store apps and you can use phone tethering so you have internet access anytime.
Despite not being a performance beast (processor/ram) it doesn't lag and does the job properly. You can easily go back to the infiniti system anytime as this goes through the aux.
The only downside I haven't this point is that for android only, the phone still goes through the infiniti car system. It still integrates well, but something to keep in mind