Wireless AA and CarPlay use a hotspot your car emits that your phone connects to and transfers the image/inputs/audio that way
replyWireless CarPlay uses Bluetooth to exchange SSID and key info before switching over to WiFi for the duration of the session.
replyWow that's cursed, never realized that's how it worked.
replyCursed is exactly how I would describe it - because it works great until it doesn’t and it of course gives you zero clue why it won’t connect.
replyIt uses Bluetooth to stream audio, but everything else happens through a WiFi connection exposed by the car that the phone automatically pairs with after the Bluetooth handshake.
replyThe way I understand it, the connection is negotiated via BT, but then wifi is used for the fat data pipe to run the display.
replyThey didn't run over BT. BT is used to initiate communication and share the password to a wifi-network. It then uses that Wi-Fi network for most communication, keeping the BT channel strictly for telephony.
replyI thought the latest Bluetooth protocols were basically designed to hand off to an ad-hoc Wi-Fi connection between the two devices after the initial handshake. (Might be an oversimplification of the real protocol)
replyThey actually run over WiFi (WiFi direct IIRC) - Bluetooth is mostly just used as a setup handshake and to help the head unit decide which phone in the car should be the one connected.
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