Since iOS 17.5.1 update, Bluetooth no longer works and iPhone 11 Pro overheats. 😠

Have problem with bluetooth too after 17.5.1 update. 13 Pro Max.

Bluetooth works with everything except macbook Sonoma 14.5 (23F79).

Switching on and of , and reboot of both devices didn't help.

I’m having similar problems with my iPhone 15 Pro Max after updating to 17.5.1 yesterday. Bluetooth is no longer able to play audio using my car as output device.

The connection is made but no audio is transmitted. When using Apple Music it seems that it tries to switch audio device several times (pausing and playing), but stops completely after a few tries.

This looks like a regression impacting several users.

Me too. iPhone 15pro. Won’t connect to my car, won’t connect to my airpod pros. I suspect it’s the update but will have a further play today.

Similar issue here. After updating to 17.5, Bluetooth keeps disconnecting from my car audio. Same issue with 17.5.1.

Since the update to 17.5.1 Bluetooth isn't working (iPhone 14 Pro Max) and I cannot connect to all Bluetooth devices including Airpods Pro. Bluetooth is off and cannot be launches. Sometimes it is on and then disappears without touching the phone...

Tried all sorts of bug-fixes but nothing is helping.

@Apple - Please fix this problem quickly!!

I am having this bluetooth issue along with WiFi issues as well. I have an iPhone 13 mini. Connections WIFI and Bluetooth drop randomly.

My Apple watch doesn't retain connection. Hard resets randomly work.

My wifi and Bluetooth doesn't connect immediately, however it does after hard resetting the device it for a few minutes then drops again.

Resetting network settings makes no difference.

I Find this bizarre as I had no problems before 17.5......

My Device had a rear system repair earlier this year after a logic board failure.

I fear I will have to do a DFU Restore and set up as new, I really do not want to go there.

Try and force restart the iPhone to see if the issues persist

1. Press and quickly release the volume up button.
2. Press and quickly release the volume down button.
3. Press and hold the side button.
4. When the Apple logo appears, release the side button.

Same issue, after being forced update to iOS 17.5.1 (automatic update was switched off!), my iPhone 13 encounters very unstable connection via Bluetooth with my car's audio system.

I can trigger a connect, but the bluetooth get disconnected in the next second.

The issue was not there in iOS 17.4.2.

apple please fix the issue.

It's not always the iOS update's fault!  Many things can cause phone problems.  If you tell people you think it's an iOS update, it might make it harder to fix or find a solution for the real issue.

Remember, the right question often leads to the solution! Please look in the right direction.

iOS updates aim to enhance user experience, boost security, and fix bugs rather than disrupt core features. The majority of the issues after updates might stem from underlying, unmentioned factors. Updates won't typically alter personal data but may refine settings or features. Backup before major updates for safety. Review Apple's update details and backup advice for a smooth process.

Kindly consider checking your settings and addressing any device issues before attributing the issue to external factors. This could be a pure coincidence that the iOS update affected the iPhone functions.

Before initiating a standard iOS update, it's advisable to create a backup. Have you completed this step? If yes, proceed with the restoration from the backup.

See what each update does: About iOS 17 Updates, About iOS 16 Updates, About iOS 15 Updates, About iOS 14 Updates, About iOS 13 Updates, About iOS 12 Updates, and so on...

What car do you drive? My car is a 2015 VW and I've been having these exact same issues with bluetooth since 17.5.1. I know quite a few things about cars, so I was pretty confident I could fix my car's bluetooth myself, but after multiple hours of work and fully rewiring parts of the electrical harness, it still wasn't working. Took it to a VW dealership and they told me I had already tried everything they could have thought of and the only option to fix it would be to replace the whole entertainment system. Then I saw people saying they've been having the same issue after updating to 17.5.1.

I'm a computer scientist by trade so looking at the technical side of things, I suspect the iOS update impacted the phone's backwards compatibility with older bluetooth versions. In 2015, the most recent bluetooth version was 4.2. Currently it's 5.3, and while bluetooth is supposed to be compatible with all prior versions, I'm suspicious that the iOS update is interfering.

So, if you don't mind me asking, what year is your car? If it's 2020 or prior, my theory could be correct.

I have only had my iPhone 15+ for a few months. Moved from iPhone 11, the set up was spectacular and no problem with Bluetooth especially my old Amazon Echo

After the current upgrade, I can’t get my Amazon Echo to work—even with a new install.

I was just pondering the other night how my iPhone 15 Plus seems to be getting hotter.

Hello~ Click on below…

Restart your iPhone - Apple Support

~Katana-San~

I just received a call while I was driving and the device switched the audio to my car stereo 🫠

Same for me my bluetooth is working not working disconect and reconnect on my iphone 14 plus.

[Edited by Moderator]