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In rare VoIP calls, B can’t hear A, but A can hear B — audio input issue on iOS?
Hi everyone, We’re seeing a rare but frustrating issue in our iOS VoIP app and would appreciate any advice. What’s happening: In some VoIP calls between two users (let’s say A and B), B can’t hear A’s voice, but A can still hear B just fine. It doesn’t happen often, but once it does, the issue persists until the device is restarted. Users who experience this issue typically have other voice or conferencing apps installed and actively use them. They report that when our app runs into this problem, those other apps continue to work normally. ⸻ What we’ve ruled out: • AVAudioSession has microphone permission, and audio input works under normal conditions • Network conditions are stable • App-side logic seems solid — the issue occurs extremely rarely (e.g., 1 out of several thousand calls), making it unlikely to be caused by a consistent bug in our call flow ⸻ What we’ve tried to fix it (all ineffective): Restarting the call — no effect Force-quitting and relaunching the app — no effect Toggling Bluetooth: disconnecting and reconnecting audio route, or switching back to built-in mic — no effect Replugging wired headphones or switching to the default iPhone audio input — no effect ⸻ What actually works (so far): • Restarting the device — this is the only action that reliably fixes the issue ⸻ What we’re looking for help with: 1. Does this sound like an iOS-level AVAudioSession routing or audio stack issue? 2. Is there any way to recover from this state without rebooting the device — either through iOS system settings or programmatically? 3. Are there any known audio routing or input bugs in iOS that match this behavior? Thanks in advance — any suggestions or pointers would be greatly appreciated!
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29
Jun ’25
MacBook Air M4 - Battery Drain During Sleep
Hello, Can anyone tell me what this means? Or if it's normal? I'm seeing about 10% battery drain per day on sleep, and pmset -g log shows wakes nearly every minute. 2025-06-10 17:10:35 -0700 DarkWake DarkWake from Deep Idle [CDNP] : due to smc.70070000 wifibt SMC.OutboxNotEmpty/ Using BATT (Charge:94%) 5 secs 2025-06-10 17:10:43 -0700 DarkWake DarkWake from Deep Idle [CDNP] : due to smc.70070000 wifibt SMC.OutboxNotEmpty/ Using BATT (Charge:94%) 6 secs 2025-06-10 17:13:49 -0700 DarkWake DarkWake from Deep Idle [CDNP] : due to smc.70070000 wifibt SMC.OutboxNotEmpty/ Using BATT (Charge:94%) 8 secs 2025-06-10 17:14:01 -0700 DarkWake DarkWake from Deep Idle [CDNP] : due to smc.70070000 wifibt SMC.OutboxNotEmpty/ Using BATT (Charge:94%) 6 secs 2025-06-10 17:14:10 -0700 DarkWake DarkWake from Deep Idle [CDNP] : due to smc.70070000 wifibt SMC.OutboxNotEmpty/ Using BATT (Charge:94%) 6 secs 2025-06-10 17:15:01 -0700 DarkWake DarkWake from Deep Idle [CDNP] : due to smc.70070000 wifibt SMC.OutboxNotEmpty/ Using BATT (Charge:94%) 6 secs 2025-06-10 17:16:31 -0700 DarkWake DarkWake from Deep Idle [CDNP] : due to smc.70070000 wifibt SMC.OutboxNotEmpty/ Using BATT (Charge:94%) 6 secs 2025-06-10 17:18:07 -0700 DarkWake DarkWake from Deep Idle [CDNP] : due to smc.70070000 wifibt SMC.OutboxNotEmpty/ Using BATT (Charge:94%) 6 secs Looking at one section of them: 2025-06-10 22:00:46 -0700 DarkWake DarkWake from Deep Idle [CDNP] : due to smc.70070000 wifibt SMC.OutboxNotEmpty/ Using BATT (Charge:90%) 6 secs 2025-06-10 22:00:46 -0700 WakeDetails DriverReason:smc.70070000 - DriverDetails: DriverReason:wifibt - DriverDetails: DriverReason:SMC.OutboxNotEmpty - DriverDetails: 2025-06-10 22:00:46 -0700 HibernateStats hibmode=3 standbydelaylow=0 standbydelayhigh=0 35177 2025-06-10 22:00:46 -0700 WakeTime WakeTime: 0.094 sec 2025-06-10 22:00:46 -0700 Kernel Client Acks Delays to Sleep notifications: [Port-USB-C driver is slow(msg: SetState to 0)(60 ms)] 2025-06-10 22:00:46 -0700 Kernel Client Acks Delays to Wake notifications: [RTBuddy(ANS2) driver is slow(msg: SetState to 2)(68 ms)] [AppleCS42L84Audio driver is slow(msg: DidChangeState to 1)(77 ms)] [Codec Output driver is slow(msg: WillChangeState to 1)(77 ms)] [AppleConvergedIPCOLYBTControl driver is slow(msg: SetState to 1)(118 ms)] [AppleMultiFunctionManager driver is slow(msg: SetState to 1)(121 ms)] [Port-USB-C driver is slow(msg: SetState to 0)(59 ms)] [RTBuddy(ANS2) driver is slow(msg: SetState to 2)(68 ms)] [Codec Output driver is slow(msg: WillChangeState to 1)(78 ms)] [AppleConvergedIPCOLYBTControl driver is slow(msg: SetState to 1)(120 ms)] [AppleMultiFunctionManager driver is slow(msg: SetState to 1)(123 ms)] [RTBuddy(ANS2) driver is slow(msg: SetState to 2)(68 ms)] [Codec Output driver is slow(msg: WillChangeState to 1)(78 ms)] [AppleCS42L84Audio driver is slow(msg: DidChangeState to 1)(78 ms)] [AppleConvergedIPCOLYBTControl driver is slow(msg: SetState to 1)(116 ms)] [AppleMultiFunctionManager driver is slow(msg: SetState to 1)(120 ms)] [RTBuddy(ANS2) driver is slow(msg: SetState to 2)(68 ms)] [Codec Output driver is slow(msg: WillChangeState to 1)(78 ms)] [AppleCS42L84Audio driver is slow(msg: DidChangeState to 1)(78 ms)] [AppleConvergedIPCOLYBTControl driver is slow(msg: SetState to 1)(118 ms)] [AppleMultiFunctionManager driver is slow(msg: SetState to 1)(120 ms)] [powerd is slow(5915 ms)] [Port-USB-C driver is slow(msg: SetState to 0)(64 ms)] [RTBuddy(ANS2) driver is slow(msg: SetState to 2)(68 ms)] [AppleCS42L84Audio driver is slow(msg: DidChangeState to 1)(78 ms)] [Codec Output driver is slow(msg: WillChangeState to 1)(78 ms)] [AppleConvergedIPCOLYBTControl driver is slow(msg: SetState to 1)(119 ms)] [AppleMultiFunctionManager driver is slow(msg: SetState to 1)(122 ms)] [RTBuddy(ANS2) driver is slow(msg: SetState to 2)(68 ms)] [Codec Output driver is slow(msg: WillChangeState to 1)(77 ms)] [AppleCS42L84Audio driver is slow(msg: DidChangeState to 1)(77 ms)] [AppleConvergedIPCOLYBTControl driver is slow(msg: SetState to 1)(117 ms)] [AppleMultiFunctionManager driver is slow(msg: SetState to 1)(120 ms)] [RTBuddy(ANS2) driver is slow(msg: SetState to 2)(68 ms)] [AppleCS42L84Audio driver is slow(msg: DidChangeState to 1)(76 ms)] [Codec Output driver is slow(msg: WillChangeState to 1)(76 ms)] [AppleConvergedIPCOLYBTControl driver is slow(msg: SetState to 1)(118 ms)] [AppleMultiFunctionManager driver is slow(msg: SetState to 1)(119 ms)] [RTBuddy(ANS2) driver is slow(msg: SetState to 2)(68 ms)] [Codec Output driver is slow(msg: DidChangeState to 1)(76 ms)] [AppleConvergedIPCOLYBTControl driver is slow(msg: SetState to 1)(118 ms)] [AppleMultiFunctionManager driver is slow(msg: SetState to 1)(121 ms)] [Port-USB-C driver is slow(msg: SetState to 0)(58 ms)] [RTBuddy(ANS2) driver is slow(msg: SetState to 2)(68 ms)] [AppleCS42L84Audio driver is slow(msg: DidChangeState to 1)(77 ms)] [Codec Output driver is slow(msg: WillChangeState to 1)(77 ms)] [AppleConvergedIPCOLYBTControl driver is slow(msg: SetState to 1)(117 ms)] [AppleMultiFunctionManager driver is slow(msg: SetState to 1)(120 ms)] [RTBuddy(ANS2) driver is slow(msg: SetState to 2)(68 ms)] [AppleCS42L84Audio driver is slow(msg: DidChangeState to 1)(76 ms)] 2025-06-10 22:00:48 -0700 com.apple.sleepservices.sessionTerminated SleepService: window has terminated. 2025-06-10 22:00:52 -0700 Assertions PID 323(powerd) Released InternalPreventSleep "PM configd - Wait for Device enumeration" 00:00:05 id:0x0xd00009032 [System: PrevIdle] 2025-06-10 22:00:52 -0700 Sleep Entering Sleep state due to 'Maintenance Sleep':TCPKeepAlive=active Using Batt (Charge:90%) 14 secs 2025-06-10 22:00:53 -0700 Assertions Summary- [System: PrevIdle] Using Batt(Charge: 90) 2025-06-10 22:00:53 -0700 Wake Requests [process=mDNSResponder request=Maintenance deltaSecs=6474 wakeAt=2025-06-10 23:48:48 info="DHCP lease renewal"] [*process=dasd request=SleepService deltaSecs=979 wakeAt=2025-06-10 22:17:13 info="com.apple.dasd:501:com.apple.intelligenceplatform.IntelligencePlatformCore.Pipeline.FastPass"] [process=powerd request=TCPKATurnOff deltaSecs=227969 wakeAt=2025-06-13 13:20:22] [process=powerd request=CSPNEvaluation deltaSecs=2005 wakeAt=2025-06-10 22:34:18] [process=powerd request=UserWake deltaSecs=7086 wakeAt=2025-06-10 23:59:00 info="com.apple.alarm.user-visible-com.apple.donotdisturb.server.ScheduleLifetimeMonitor.timer,619"]
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Jun ’25
Unexpected high mobile data usage when travelling in Europe using an ESIM on iPhone 16 Pro Max
The iPhone mobile data usage skyrocketed to use 1GB per day whereas I am normally a 5GB a month data user. the culprit was Apple System Services General there is currently no iPhone functionality to turn off System Services Genera. the solution was to block updates.cdn-apple.com using data sniffer called Proxyman. Tip hat to the person who posted “High mobile data usage on iOS 18 and how to solve it” on Reddit.com This is something apple developers maybe should look at
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21
Jun ’25
IOS 26
I recent installed IOS 26, with my iphone 15 as a machine. I am experiencing glitch on switching apps, switching users in a specific apps. Delay is also visible when unlocking the phone, typing, touching the screen, going back to the previous app (clicking the arrow button on the top left). When using a two fingers navigating the phone, the other finger is unrecognizable when clicking on to something. Overall, UI were elegant and amazing. Please fix the responsiveness and may consider lower versions of iphone when possible.
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36
Jun ’25
tvOS 26 issue: Please bring back passcode-locked apps — disappearing apps and shared restrictions make Apple TV frustrating for families
I recently updated to tvOS 26 on my Apple TV 4K (1st generation) and was disappointed to find that apps I restrict no longer appear at all. In earlier versions, restricted apps would still be visible and simply prompt for a passcode — this was much more convenient for adults in the household. Now, if I restrict apps for my children, they disappear completely. To use them again, I have to go deep into settings, turn restrictions off, and even recreate the passcode each time, which is frustrating and impractical for daily use. I also tried adding a Kids user account, but most restrictions still apply system-wide. Only the Apple TV app behaves differently between users. This makes switching between parent and child accounts nearly pointless for managing access. Please consider one or both of the following: 1. Bring back the passcode-on-launch behavior for restricted apps (instead of hiding them). 2. Give each user their own isolated settings environment, like how profiles work on iOS/iPadOS or even a fresh Apple TV—this way, restrictions, home screen, and app access could be personalized. Families are a huge part of the Apple TV audience, and these recent changes have made it much harder to use the device in a shared household. Thank you!
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119
Jun ’25
Making music….
Maybe a bit of a simplistic question, but…. Best ways to create music - programmatically - within an app? I have a few small, simple games that I would like to add some background music to. I’ve fiddled with AVAudio, SKAudio, and now AudioKit. I’m just not quite finding the holy grail of music generation. I don’t know if it’s more technique or tool. So I thought I’d hit up the pool of minds here for some suggestions…?
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69
Jun ’25
iPhone 13 Pro stuck in DFU/Recovery after failed flash.
Installed the iOS 26 Beta on my iPhone 13 Pro last night, hated it. I wasn't aware that there is a supported way of restoring back to iOS18.5, so I (foolishly) opted to flash the iOS18.5 ispw file onto my device using a 3rd party tool. Now, my device is stuck in a state between. Unable to flash, unable to use itunes to restore, randomly gives error codes during restoration attempts. Worries my device may be lost permanently! Please advise.
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44
Jun ’25
Question regarding ethernet over USB-C
Hello, I have a question regarding the ethernet-over-USB-C stack within iOS/iPadOS. It seems that when manually assigning an IP on this interface within iOS, the IP is stored. Therefore, when disconnecting (the USB-C cable) and reconnecting to another device for a subsequent ethernet connection, the iOS device will always default to the previously assigned IP address (obviously, this isn't the case if the other end is a DHCP server). So, within the iPhone's Ethernet-over-USB-C driver, I was curious if iOS just keeps the assignment based on the MAC of the local USB-C interface, or is stored information tied to some other identifier? Is there a way to override this behavior? Thank you
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28
Jun ’25
No Connection To Mobile Data
I installed the new developer beta 26 yesterday, but since that I only have problems with my iPhone. Besides not being able to update the software bc an error appears, I also don‘t have the abbility to use mobile data. If I try to, it only says „could not activate mobile data network“. I already tried to restart the phone, to reset it or to take the SIM out and in
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27
Jun ’25
IOS 26`
Anyone else's phone die after installed iOS 26 beta? I'm not happy at all. shows that my phone is charging but will not turn on. have tried hard resetting it 50+ times, 5 different chargers.. nothing.
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157
Jun ’25
iOS 26 : iPhone 16 Pro not charging via USB-C
Hello, I installed iOS 26 beta 1 yesterday when it came off but now, when I plug my iPhone, it just do nothing. I can charge it via the induction charger but I can't via USB-C port. The other way I can charge it is by turning my iPhone off and plugging it so it starts and then it charges via USB-C Port even when it starts. The thing is that when I unplug the cable and try to plug it back in, it doesn't charge anymore... I tried to put the restore mode (with the Mac and the cable on the screen) and even the DFU Mode but the iPhone is not detected by my Macbook and it's the same thing for my Windows PC : not detected... I also tried to erase the settings and content but same issue... Not charging Apple Store can do nothing because it's a dev beta... Am I the only one to have that issue ?
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25
Jun ’25
Unable to check for updates
Hey there, I recently updated my iPhone to the iOS 26 developers beta version, and I’m encountering an issue on the Software Update page. It says “Unable to check for updates,” and I’m unable to revert to iOS 18. Is this a temporary problem? Will I be able to update my iPhone in the future without needing to reset it? Thanks
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156
Jun ’25
Subscription issue
I have created an app and for the final stage i added subscription feature. This works great in testflight, but not when i push out to external testers. I set up what i needed to in apple store connect (i must have done it right as it works in testflight), and i linked it to th emost recent version. Nothing I do seems to get the sub info to display and pull through to the app in the sub box when selected. No price and the usual stuff. I was told send for review. Failed the review and im working on that but something tell sme this is a glitch athat needs fixed on my account maybe. Can anyone help please
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31
Jun ’25
iOS 26: iPhone will not power on stuck on battery screen
I set iOS 26 to install overnight, put my iPhone 16 Pro on the MagSafe charger, watched it charge just fine, and went to sleep. When I woke up the iPhone showed the “plug into power” dead battery screen. I took it off MagSafe and put it back on. A half hour later the phone was warm but still wouldn’t power on, just showed the battery screen with a little red in it. I took it off MagSafe and plugged it into my iPad charging brick with USB cable to give it more power, still it did not turn on. I tried holding all the buttons to try to force a restart but didn’t work. For anyone else encountering this, do this to enter DFU mode and restore it. I had to do it a few times before I got the timing right. Plug into your Mac and open Finder (or apparently a PC with Apple Devices or iTunes) Press and quickly release volume up Press and quickly release volume down Press and hold right side button When the battery disappears and screen goes black, hold volume down and continue holding side button After a couple seconds release the side button and continue holding volume down A prompt to allow connecting to the iPhone should appear after a couple seconds, click Allow, and it’ll say the iPhone entered DFU mode - proceed to restore the firmware
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244
Jun ’25