If you don’t connect to USB accessories regularly, you might need to turn on this setting manually. In Settings, go to Face ID & Passcode or Touch ID & Passcode, and turn on USB Accessories under Allow Access When Locked.
Why is my iPhone not playing music through USB?
Check your USB cable
Try a different USB cable if possible. Try a different USB port if possible. Check your cable for signs of damage if your cable looks damaged, do not use it. Check the charging port on the bottom of your iPhone and the USB port for any debris, remove any debris.
Why wont my music play through USB?
If your stereo doesn’t recognize the USB device, disconnect and reconnect it again. If there is no playback after reconnecting the device, check the following: Make sure the USB device isn’t empty. Make sure the files in your USB device is compatible with your stereo.
Why won t my iPhone 13 play music through USB?
“Restart your device and your car. Make sure that your device is unlocked and on the Home screen. If possible, try to connect using another cable or USB port. Check the manual that came with your car to learn how to connect an Apple device.