iPhone 11 won’t play through USB

oramaC2010 Said:

"iPhone 11 won’t play through USB: [...]It just updated to IOS 15.1.[...]"

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Report this to Apple:

Do your Part: Provide Apple with feedback on this, letting them know what exactly is occurring after this update.  Apple may not get back to you directly, but the more feedback they receive on this, the more they will know what is occurring, and what bug fixes to include in updates to come.

1. Go Here: Feedback - iPad - Apple
2. Select: "Bug Report" for the "Feedback Type"
3. Comment: on when you came across this issue, and how you have troubleshot it thus far.
4. Proceed from there as necessary

oramaC2010 Said:

"iPhone 11 won’t play through USB: My iPhone 11 stopped playing music in my car through USB. It still charges when plugged into the radio but it doesn’t seem to be connecting to the radio because of you select a song it just plays out of the phone. It just updated to IOS 15.1. I tried in my other vehicle and it is doing the same thing so it is not the car or the cord."

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Try Re-Pairing this:

Remove your iPhone as a trusted device in your car, and then add it back. You'd un-pair the iPhone from your Car, and would then pair it back.

A Few Things:

• When to Pair: Try paring it while in Park

• What to Read: Refer to the Driver's Manual of the car

• Enable Bluetooth: Make sure that Bluetooth is enabled in Settings(by tapping it so that it is green)

• Visit this Link: How to Connect your iPhone, iPad, or iPod touch to your Car - Apple Support