iPhone 11 on iOS 13 having Bluetooth connectivity issues

I know this is any annoying fix, but I reset my phone as new (not from a back-up) and everything works perfectly with my Tundra now. If you back everything up to iCloud (pictures, messages, etc.), then all you will have to do is redownload your apps, sign in to everything, and reset up your settings. Again, I know this is an annoying process (I had to do it 5 separate times), but it did provide a solution. There was a corruption in my back-up.

Good luck!

I had the same problem but figured out that my iPhone X was still a connected device and once I removed it, I shut off my phone and turned it back on and my Bluetooth devices showed up again, including my Honda. Give that a try.

Steelduck, I am having same stuttering issue on all my headphone devices (but not car or BT stereo). I have a Pro Max though (and my daughter's iPhone 11 does not have issue, so opposite of yours!).

I have made following observation (other than its driving me nuts and Apple has been less than helpful):

For me, issue seems to happen mostly in my car where I have the Phone connected to Audi BT. Seems Headphone BT and Car BT are different BT protocols or something (note that headphone only shows up in BT on upper right of iPhone screen when using a headphone, but not a car or a speaker).

I noticed that (unlike the 11 and earlier iPhones), even when using headphones (but car BT on), the Audi display shows what is playing on iPhone (but actually sounds is through headphones). So somehow, the BT is still connected in some way to Car. I noticed that if I turn the car off when listening to BT on Headphones, the audio on the Headphones shuts off (even though in theory it should not since connected to Headphones).

So, i think part of the issue is the BT is confused and trying every once in a while tries to re-connect audio to the Car BT (which might be first in line in the protocol or something?). When it tries to connect (while on Headphone), it quickly stutters/chirps and loses sound, but then comes back to sound on headphone.

So, I turned off my car BT yesterday and boom, I did not get the stutter on my headphones. I must admit I once in a great while get the stutter while wearing in the house (and nothing BT trying to connect to), but very infrequent.

So maybe you can try same fix (although not a fix, just a workaround until Apple actually fixes it). See if you have any other BT device (non headphones) that are "connected" or in range to be connected and turn them off and see if that fixes the chirp as it did for me. Who knows.

As an aside, Apple had sent me a Bluetooth Profile so they could then log my BT issues and they uploaded log last week. I spoke with a Sr. Tech for at least an hour last week. Called them yesterday to report my new findings on the Car, etc., and new Sr. Tech said he saw NOTHING in my account about the issue or any call with other tech or even the BT log I sent them. So, yeah. Bad. I just hung up since why spend all this time with them when it seems to go nowhere.

I have a gift for both Apple as well as the people of this thread... I compiled a list of all cars and devices (from the first 25 pages of posts in this thread) that are affected. I will first say that users report that the problem reportedly affects the following devices:

iPhone 7 with iOS 13

iPhone XR with iOS 13

iPhone 11 with iOS 13

iPhone 11 Pro with iOS 13

iPhone 11 Pro Max with iOS 13

It doesn't take a Venn Diagram to see that the only commonality here is iOS 13. The fact that iOS 13 doesn't malfunction on all devices doesn't mean the issue isn't still purely an iOS 13 issue. While the issue does certainly depend on various other factors in the "environment" of the OS, these various environmental elements are merely triggers for the malfunction, not to be confused with actual causes for malfunction. The only clear cause that can be established here is something within the iOS 13 software that malfunctions under various conditions.

Here is the list of all cars and devices that have been reported (in this thread) to have connectivity issues with iOS 13 (in the first 25 pages of the thread):

Acura RL (2009)

Acura TSX (2011)

Airpods

Amazon Echo

Anker Soundbuds Slim earphones

Audi (2017)

Beatsx headphones

Beats Studio 3

BMW 4 series

Bose headphones

Bose QC35 II headphones

Bose Soundsport earbuds

Bose sound bar

Bose speakers (soundlink and other unspecified models)

Boss BT module on motorcycle

Chevy Silverado

Chrysler 300 (2013)

Conico earbuds

Costco Phonak hearing aids

"Dodge" (2014) (jjizhere)

Dodge Dart uconnect radio (2014)

Ear buds (wireless)

Eufy bathroom scale

Ford Escape (2011)

Ford Explorer

Galaxy Buds

Garmin Forerunner

HK Onyx Studio

Hole19 (GPS Golf App)

Honda Accord

Ifrogz charisma headphones

iHome speaker

iWatch (4, and other unspecified versions)

Jaguar F-Pace (2017 and other unspecified years)

Jay Bird headphones

JBL Charge 3

JBL Clip 2

Jeep Cherokee (2017)

Kenwood DNN991HD (2014)

Kenwood head unit (older aftermarket)

Kia Sorento GT line S

Kia Soul car

Kirkland KS9 hearing aids

Land Rover Discovery Sport

Lexus RX460 (2016)

Macan (2017)

Mazda3 (2014)

Mazda CX 3

Mazda CX-5

Mercedes (RGB-UK)

Mini Cooper (2019)

Motorola H720 earpiece

Motorola H730 earpiece

Nissan Versas (2019)

Opel (unspecified vehicle model/year)

Panasonic soundbar

Phonak Marvel 90

Plantronics Backbeat Pro

Plantronics Explorer model EOTE14

Plantronics PLT Edge

Plantronics Savi 745 headset

Plantronics Voyager Edge headset

Porsche 911 (2015)

Porsche Mecan (2017)

Porsche PCM (2015)

Powerbeats

Raycon E50 earbuds

Renault Megane IV

Samsung soundbar

sound bar (fuji311)

speakers (fuji311)

Scion xB (2012)

Sony XF-1000XM3 headphones

Subaru Cross Trek (2018)

Subaru unspecified model / year

T&V Kurbis BT

T&V Laut BT

Tacoma (2016, 2019)

Taotronics earbuds

Total PA Pro

Toyota Land Cruiser (2018)

Toyota 4Runner (2014 and other unspecified years)

Toyota C-HR (2018)

Toyota Highlander (2017, 2018)

Toyota Prius 3 (2018)

Tundra 18

uconnect in car (fuji311)

UA Boom speakers

UE roll (Apsyc)

Volkswagen (nightfly72)

Volvo S60

Volvo XC60

Volvo V60

Xiaomi Roidmi 3

"all of my bluetooth devices except Apple ones don't work": several users

Unspecified bluetooth problems: too many users from this thread to list

Unspecified car: too many users to list

Unspecified headsets, headphones or speakers: several users

"Hey Siri" buggy

"bluetooth receiver" (one user)

"watch" (one user)

* some cars utilizing Uconnect software

Thankfully, there is no such thing (yet) as an iOS bluetooth pacemaker device/app.

Personal update: my Motorola H720 and H730 bluetooth devices stopped malfunctioning, not immediately after installing iOS 13.2, but eventually (not sure why). And as I type this I'm updating to iOS 13.3, so I'm assuming that this will, at the very least, not re-BREAK the bluetooth functionality. That said, I'm still leaving these two devices on the list above since they were affected by this problem for a while.

Next time some Apple phone support person tries to say this is user error, a vehicle manufacturer issue, or <cough> "coincidence" (yes, these are all real responses that Apple support people gave to people in this thread), refer them to this post, which I believe is on the 84th page of this thread. That this is an APPLE issue is way beyond statistical certainty.

I also had problems with the disconnects form the nav head unit in my suburu. Later updates resolved that.

Then I had problems with the music skipping, lagging, cutting in and out and static.

I finally resolved this by doing two things not sure if one or both fixed it.

Here is what I did

1. Disable wifi on the head unit in the car (only used to update the maps and I normally do this via usb thumbdrive so no loss there)
2. Disable the Listen for Siri option

No skips, not cuts or etc when listening to music for about 3 days, before it was every few minutes or seconds.

This issue is definitely one of the most frustrating experiences I've ever had with Apple. I've been an iPhone user since the 3G, nearly 11 years ago. Of all the iPhones I've ever owned, the 11 Pro Max is the first one I've regretted buying. I can honestly say I am not at all "delighted" or "excited" about this device. It's been frustration from day 1. My wife, also a stalwart Apple consumer, feels the same way. This, and the woes with MacOS Catalina, have me questioning Apple's quality control processes.

I've been contacted by Apple Bluetooth Engineering, and installed their profile as directed. Then sent them MANY log dumps, and performed some other things for them. I used to work in Software Development and in Software/Hardware QA--and have experience with testing hardware and software, so I included some details about my own and my wife's cars, and experiences that I thought would be helpful. After my last log dump, and details about the overall steps, conditions, etc...

No reply at all from Apple. Not even a "Thank you". 

After completing some recent iOS software updates (not allowed to say), I removed my UConnect pairing from the iPhone, and removed my iPhone from my UConnect 8.4N in my 2015 Dodge Dart GT. Then powered off the car, exited the car, then locked it with my fob. Waited 5 mins, then got back in the car--restarted it--then attempted to pair my iPhone 11 Pro Max. It paired (after about a 45 second delay). Music and calls seem to be working--about 80% of the time. Once or twice a day--the pairing fails.

Even though the success rate is better, from a nearly ZERO success rate, Apple still has work to do. My iPhone X had a 100% connection success rate. My children each have have iPhone XR--and they have no pairing issues. For a premium device--this level of quality and support is completely unacceptable.

Apple Bluetooth Engineering is keenly aware that my car's UConnect system is up-to-date, as well as the same system in my wife's 2014 Dodge Journey SXT Plus, which is also having the same issues with her iPhone 11 Pro Max. In fact, FCA's last updates to these systems was 3 years ago. Nothing has changed on the cars. Only the iPhone and iOS version.

[Edited by Moderator]

Check under Settings --> General --> About and see if your modem firmware is 1.03.12. If it is then 'forget' and re-pair the problem device. I did that and, so far, the issue I've had with my two Plantronics headsets is either gone or the frequency has been reduced.

(Credit for this goes to Waldo1979)

SOLVED.

I went to the nearest Apple Store, I had already done all the tests they would do (the Genius Bar attendant said it) so he said "I'll replace your iPhone".

With the first iPhone I had dropped calls and the sound was lower and darker, but I couldn't know it as I couldn't compare with other iPhone 11 Pro Max.

No issues with car Bluetooth or Bluetooth earphone.

I had this issue for months. On both my original 11 and the replacement 11. Updated software all over the place. Reset everything. Set up as new phone. Reset my car system. The only thing that solved it was when I stopped wearing my Apple Watch. As soon as I started leaving it at home, wireless CarPlay started working perfectly. The watch stays in my bedroom and now I never have issues with my Bluetooth speaker in my office on the other side of my house. Nothing else changed — same car, same phone, same iOS update, same Bluetooth speaker, just no Apple Watch. The Watch is a Series 2 Nike+ version. I've had the watch since it came out and always keep it on the latest Watch OS never ever had an issue like this until the day I got the iPhone 11 Pro Max.

I have no idea why this helped or solved the problem. But after 9 months of trying literally everything else, it's the only thing that had any effect. It seems ridiculous to me that I have to stop using one Apple product so another Apple product will work correctly. You can't blame Bluetooth or anything else for that; it's clearly an Apple issue that Apple needs to fix.

[Edited by Moderator]

I had Bluetooth problems but had a lightbulb moment when preparing my iPhone 11 for return to Apple. I did a restore, first with online instructions, the with an Apple rep on the phone. Each time I was left with a screen showing the lightning charge lead and a laptop. Could not restore. “LIGHTBULB”

I thought what would happen if I literally pulled the plug when it had cleared the memory. So I waited for the bar o go across but before the restore started. After all if it didn’t work, or I buggered it up even more, it was due to go back under warranty. So after disconnecting I switched the phone off, counted the usual 12 seconds, then switched back on. Reconnected to iTunes and did a restore. I didn’t use cloud. I restored a fresh program. Not only did my phone come back from the dead but it has, up too now, cleared my Bluetooth problem.

My thought is that there is a bogey in the software from the start but by clearing it all out and reloading the latest from Apple it did the trick. Well, it has to my phone anyway.

JUST THOUGHT I WOULD MENTION IT. I know that disconnecting anything like that is not a good idea, usually, but what do I know? I’m only a London Taxi Driver. Not an I.T. Expert. WORTH A TRY????

iOS 13.1 will be rolling out tomorrow. That should fix the Bluetooth issue and many other present on iOS 13.

My problems seem to have resolved once I updated to 13.1....🤞🏻🤞🏻

Installing 13.1.2 now. There's a line item saying it fixes bluetooth disconnects on certain vehicles.

My dad had same problem. I had to delete all paired devices including his garmin and the cars. Then did the pairing again. Now everything works. So basically unpair and pair again.

Unpair and repair worked! Thank God.