Audio playback stuttering/skipping iOS11.4

I have an issue with my iPhone 7 where during audio playback, whether that be podcast, music or while on the phone, audio will drop out for approximately 1 second. After the dropout, the audio will stutter, much like a CD skipping. This is with the display off, waking the phone will change the issue to where the sound becomes very distorted and will repeat sections of what was just played.

I, and many others, have seen this issue since iOS 11.3. iOS 11.3.1 has not corrected it, nor has the recent release of iOS 11.4. From other people with the issue, closing the app in question, rebooting the phone, nor resetting the phone corrects the issue.

Please correct this as soon as possible as having dealt with it for two months is unacceptable.

iPhone 7, iOS 11.4

Posted on May 30, 2018 1:30 PM

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Posted on Jul 23, 2018 5:48 AM

Just a general observation; I'll update if something changes.


A few days ago I turned off "background App Refresh" in Settings -> General -> Background App Refresh. This has serious drawbacks, no doubt. But so far I have not had the problem when this feature is disabled. This dovetails with what I had figured it was since it started happening: background tasks locking up the CPU (or the sound subsystem) such that it can't continue to feed the output buffer fast enough, so the DSP repeats the last buffer (since it would just run in a continuous fast loop).


I reported the problem - with OS logs - at developer.apple.com in the bug reporter. There are instructions on how to generate the log, do it as soon as possible after the problem occurs (press both volume buttons + lock, you should feel phone vibrate; don't hold or the phone will reboot). After 10-20 minutes, sync the phone with your computer and a diagnostics file will be copied to your hard drive:


On a Mac it's here: ~/Library/Logs/CrashReporter/MobileDevice/[Your_Device_Name]/sysdiagnose

On a PC it's here: C:\Users[Your_User_Name]\AppData\Roaming\Apple Computer\Logs\CrashReporter\MobileDevice[Your_Device_Name]\


Seems like a good thing to know in general for any iOS bug you come across.


[Edit: switched the labels for Mac and PC locations, but that was probably obvious, lol]

429 replies

Mar 31, 2019 12:33 PM in response to fromer_13

I’ve had this issue for probably a year or more. It originally began happening on my 7 plus and the problem followed me through several new phones, an 8 plus, which I brought to the Apple store and they replaced. The issue started happening again with the new 8 plus and I switched to an IPhone X a few months ago and the issue has started happening again and it’s really really bad now. Oddly it doesn’t happen on my Bluetooth headphones or AirPods, but It skips and stutters like crazy when playing any audio over Bluetooth to my Anker Soundcore 2 speaker. I’ve tried wiping my phone and setting it up as a new phone but nothing works. By comparison by wife’s 7 plus and my iPad stream to my Bluetooth speaker flawlessly with no issues. I think the issue lies in the software somewhere and every time I back up my phone to the cloud the issue is being saved hence this happening to several phones. I thought the issue might be interference from some other device on my network running on the 2.4GHZ band but this doesn’t seem to be the case. I don’t know what else to do but I am at the point where I am on the verge of switching to a Samsung.

Apr 23, 2019 12:07 PM in response to fromer_13

Posting this to keep the thread alive. I've been having the problem on all audio (my music files are burned from CD and reside on my phone), including phone calls. I used wired ear buds most of the time. I run my business on my phone and the issue on phone calls is especially frustrating.


I've just turned off "background app refresh" and will see if that makes a difference.

Apr 23, 2019 1:45 PM in response to fromer_13

After disabling screen time, the skipping has dropped down dramatically. Oddly enough the orientation of the phone seems to matter too. If the phone is upside down it seems to skip less. Thanks to the folks that posted those suggestions in this thread.


After some more testing, I only seem to have the skipping with bluetooth issue on my 2012 Camry and it doesn't skip at all with my 2017 Sienna. I guess the version of bluetooth on the Camry is older than what the Xr has. Unfortunately, there has never been a firmware update offered for my Camry's radio (it's the non Entune version) and I doubt there ever will be an update.


After disabling screen time and adjusting orientation, it may only skip a couple of times in a half an hour instead of nearly constantly.

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Audio playback stuttering/skipping iOS11.4

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