I suggest just using wired carplay, wireless is good with a dongle but can be unstable same with Bluetooth as stuff can interfere with it. I usually use a carplay dongle but use wired if I'm going on a long journey and need to rely on my phones maps.I am looking to get a new phone. My current Samsung 21 does not work well with the MG4, connection is poor, especially via Bluetooth.
Anyone got any recommendations?