Bluetooth car adapter for the AUX socket
It plugs into the car's AUX socket and lets any phone play music wirelessly, so nobody has to find the right cable.
See options on AmazonHow do I connect a USB-C phone to my car's AUX socket?
Last checked November 14, 2026
Short answer
Use a USB-C to 3.5 mm aux cable. One end plugs into the phone, the other into the car's AUX socket, with no separate adapter. It works with phones that send digital sound over USB-C, which includes iPhone 15 and newer and most recent Android phones.
Best matchUSB-C to 3.5 mm aux cable
See the Belkin USB-C to 3.5 mm Audio Cable (0.9 m) on AmazonSame kind of part from other brands
How to connect it
- Find the AUX socket on the car stereo.
- Plug the cable into the phone and the AUX socket.
- Set the car stereo to AUX and play music on the phone.
Check this first
- The AUX socket is a small round 3.5 mm hole on the car stereo, often marked AUX.
- Your car or speaker needs an AUX socket: a small round 3.5 mm hole, often marked AUX.
- It works with phones that send digital sound over USB-C, which includes iPhone 15 and newer and most recent Android phones.
- No AUX socket? A Bluetooth car adapter or FM transmitter is the way to go instead.
Other ways to do it
Instead of the USB-C to aux cable.
Questions people ask
What does the AUX socket look like?
A small round hole, the same size as a headphone jack (3.5 mm), usually marked AUX on the car stereo or speaker.
My car has no AUX socket. What now?
Use an FM transmitter, which plays through a radio station, or the car's Bluetooth if it has it.
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