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“Popping Sound”

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APNS notifications - too quiet custom sound
Our application is designated to be used in a quite noisy environment (childcare facility) so we have implemented really annoying custom sounds. Unfortunately the system audio session playing custom sounds is apparently limited to half of the device volume possibility, even though the user sets full volume in the settings. How to change this behaviour to get louder notification sounds? To be clear, I don't want to overcome user settings. If the user sets quieter volume or he sets the silent mode, the application should be silent too. I just need that 100% volume settings is actually 100% device volume. This is a really critical feature for us and for our customers. We have already tried to ask for the critical alerts and we have been rejected.
2
0
156
Jan ’26
Reply to APNS notifications - too quiet custom sound
Thank you for your quick response. Unfortunately, it doesn't solve the problem as the volume settings, you are talking about, is the exact one I mentioned in my previous post. The fact, that notification sounds are much quieter than normal sounds, is observed consistently by us on iPads and iPhones, and according to this forum thread https://developer.apple.com/forums/thread/800487 it seems that it's quite well known to Apple engineers too. So, is there any solution how to make notifications (alerts) louder?
Jan ’26
ShazamKit Background Operation Broken on iOS 18 - SHManagedSession Stops Working After ~20 Seconds
Your draft looks great! Here's a refined version with the iOS 17 comparison emphasized and slightly better flow: Hi Apple Engineers and fellow developers, I'm experiencing a critical regression with ShazamKit's background operation on iOS 18. ShazamKit's SHManagedSession stops identifying songs in the background after approximately 20 seconds on iOS 18, while the exact same code works perfectly on iOS 17. The behavior is consistent: the app works perfectly in the foreground, but when backgrounded or device is locked, it initially works for about 20 seconds then stops identifying new songs. The microphone indicator remains active suggesting audio access is maintained, but ShazamKit doesn't send identified songs in the background until you open the app again. Detection immediately resumes when bringing the app to foreground. My technical setup uses SHManagedSession for continuous matching with background modes properly configured in Info.plist including audio mode, and Background App Refresh e
1
0
395
Jan ’26
BLE audio packet loss on iPhone 17 (Bluetooth 6 / N1) in real-time streaming
Hello Apple Bluetooth team, We are developing a real-time call translation system that streams raw PCM audio over BLE between iPhone and custom earbuds. This works reliably on iPhone 14 / 15 / 16, but on iPhone 17 (Bluetooth 6, N1 chip) we see severe and repeatable BLE packet loss, affecting both microphone uplink and TTS downlink. Our audio stream 16 kHz, 16-bit mono PCM 20 ms frames (~640 bytes) continuous bidirectional BLE streaming What happens on iPhone 17 BLE packets are frequently dropped entire audio frames are missing results in ASR gaps and broken TTS playback occurs even with strong RSSI and no RF interference Same firmware, same BLE protocol, same MTU and connection interval work normally on older iPhones. Questions We would like to know: Did Bluetooth 6 / N1 change BLE throughput, buffering, or scheduling? Are there new limits on sustained notify / write-without-response traffic? Is BLE audio now arbitrated differently against Wi-Fi / A2DP on iPhone 17? Is BLE
2
0
285
Jan ’26
Reply to Push To Talk framework doesn't active audio session in background
However, your answer did trigger me to check that code again, and I noticed that I accidentally added .mixWithOthers to the options. And it seems that causes the audio session not to get activated when running in the background. Ahh... That makes sense. So, as a bit of a history, before late-iOS 12/13 the way PTT apps worked was that they used a mixable (non-mixable activation never worked) PlayAndRecord session. It's expected/allowed that mixable sessions are allowed to activate in the background (for example, it's how things like turn-by-turn directions work), but that probably shouldn't have been allowed for recording sessions, since it basically allows an app to start recording whenever it wants. To fix that, we disabled all background recording activation in late-iOS 12, so PTT apps were then moved to a CallKit-based workaround (iOS 12->iOS 15) and then later the PTT framework (iOS 16+). The CallKit workaround (as the PTT framework today) came with other major benefits[1], so the mixable sess
Topic: App & System Services SubTopic: General Tags:
Jan ’26
Reply to Xcode Cloud builds stuck at App Store Connect
Sounds like we may have a similar issue. We have a builds in Processing status for about 19 hours now (build submitted Jan 13, 2026 2:43 PM). We then submitted another build at Jan 13, 2026 9:21 PM and that one also remains in Processing status. These are builds 12 and 13, respectively, in a TestFlight distribution. All prior builds of this app moved from Processing to Complete in a matter of minutes.
Jan ’26
Reply to Push To Talk framework doesn't active audio session in background
I indeed used a simplified example for demonstration purposes where I didn't add the microphone permission and audio session setup. In my real application I do. However, your answer did trigger me to check that code again, and I noticed that I accidentally added .mixWithOthers to the options. And it seems that causes the audio session not to get activated when running in the background. So I removed that option and now everything is running fine! Also great to hear that it is ok to keep things running in the background when there is an active PTT session. It indeed improves the conversation flow a lot. Thanks!
Topic: App & System Services SubTopic: General Tags:
Jan ’26
Application hanging indefinitely after successful notarization
Hi, I have an app built in Unity that I am trying to sign an notarize for distribution. I can successfully codesign the app and it runs properly. But after successfully notarizing the app, the app stops opening. My process is as follows: # codesign the app. omitting --deep --option runtime or both will result in notarization failing codesign --force --deep --verify --verbose --option runtime --sign Developer ID Application: ORG NAME (ZZZZZZZZZ) path/to/app.app # create notarization submission zip /usr/bin/ditto -c -k --keepParent path/to/app.app path/to/app.zip # submit for notarization xcrun notarytool submit --wait path/to/app.zip -v --apple-id apple@id.com --password aaaa-aaaa-aaaa-aaaa --team-id ZZZZZZZZZ Notarization seems to succeed. Running: spctl -a -vvv -t install path/to/app.app -returns: path/to/app.app: accepted source=Notarized Developer ID origin=Developer ID Application: JOHN DOE (ZZZZZZZZZ) The Problem: Before code signature, the app runs normally After code signature, the app runs normally Af
1
0
263
Jan ’26
Reply to Push To Talk framework doesn't active audio session in background
Now the problem. When the application was initially in the foreground and has an established server connection, we initially keep the server connection active when the app enters the background state, until a certain timeout or the system decides our app needs to be killed/removed from memory. This allows us to finish an incoming audio stream, quickly react on incoming responses, etc. When we then receive an incoming audio stream after a certain delay (for example, 5 seconds), we call the channelManager.setRemoteParticipant method (using try await syntax). So, the short summary is that this should just work. More specifically, all PTT apps are allowed to initiate playback at any time by calling setRemoteParticipant(), even if they're in the background. In particular, what you're describing here: we initially keep the server connection active when the app enters the background state, until a certain timeout or the system decides our app needs to be killed/removed from memory. ...is actually p
Topic: App & System Services SubTopic: General Tags:
Jan ’26
Reply to APNS notifications - too quiet custom sound
Notification (and ringer) volume is an additional setting on top of the device volume in Settings. Settings -> Sound & Haptics -> Ringtone and Alerts slider will control the volume of the ringtone and various alert sounds including notifications, in addition to the device volume setting. If you have maxed that setting and the volume is not still satisfactory, and you have also maxed out your sound design, you may want to file a feature request or bug report at https://feedbackassistant.apple.com/ Bug Reporting: How and Why? has tips on creating a successful bug report.
Jan ’26
Reply to Crackling speakers on MacBook M1 Pro
Yes, I have the same (currently on my M4 Pro, previously on my M1 Pro). Specifically noticeable if you are running music in the background while working in Xcode. The 'solution' I have is to kill the audio daemon. It will then auto-restart and it's ok for at least a while. Use: 'sudo killall coreaudiod'.
Topic: App & System Services SubTopic: Hardware Tags:
Jan ’26
Reply to Push To Talk framework doesn't active audio session in background
I've created an example app to demonstrate my problem. It can be found here: https://github.com/egeniq/ptt-audio-activation-test-ios To reproduce, do the following: Change team selection in Xcode. Run the app. Choose join. Tap on the Set remote participant NOW button. See in the log output that the audio session gets activated. Tap on the Clear remote participant button. See in the log output that the audio session gets deactivated. Tap on the Set remote participant after 5s button. Immediately go back to your phone's homescreen. After 5s see in the log output that the remote participant is successfully set. However also note that no audio session activation occurs.
Topic: App & System Services SubTopic: General Tags:
Jan ’26
Home App Intermittent Hub Not Responding Bug
I'm encountering a strange behavior with one of my home's on Home app while I'm off network. When I launch the app it indicates that the hub is not responding and all of my devices are unavailable. However, on the menu bar at the bottom if I switch to Automation and back to Home the pop-up goes away and my devices are accessible again (sometimes this take a few attempts). Siri is also able to consistently control my devices without an issue. The same behavior occurs with Home app on other devices (e.g. Mac) and with other members that have access to the household. 3rd party HomeKit app like Controller does not have an issue. This issue began with iOS 26 and I haven't had much luck resolving the issue. I already tried rebooting everything, including removing and re-adding an Apple TV (home hub). I have other homes shared with me in Home App with similar network/environment that are still working. The home I'm having issues has the most number of devices though (over 100+).
11
0
652
Jan ’26
APNS notifications - too quiet custom sound
Our application is designated to be used in a quite noisy environment (childcare facility) so we have implemented really annoying custom sounds. Unfortunately the system audio session playing custom sounds is apparently limited to half of the device volume possibility, even though the user sets full volume in the settings. How to change this behaviour to get louder notification sounds? To be clear, I don't want to overcome user settings. If the user sets quieter volume or he sets the silent mode, the application should be silent too. I just need that 100% volume settings is actually 100% device volume. This is a really critical feature for us and for our customers. We have already tried to ask for the critical alerts and we have been rejected.
Replies
2
Boosts
0
Views
156
Activity
Jan ’26
Reply to APNS notifications - too quiet custom sound
Thank you for your quick response. Unfortunately, it doesn't solve the problem as the volume settings, you are talking about, is the exact one I mentioned in my previous post. The fact, that notification sounds are much quieter than normal sounds, is observed consistently by us on iPads and iPhones, and according to this forum thread https://developer.apple.com/forums/thread/800487 it seems that it's quite well known to Apple engineers too. So, is there any solution how to make notifications (alerts) louder?
Replies
Boosts
Views
Activity
Jan ’26
There is a problem with the UITabBar in iOS 12. Please help!
When I navigate to a player controller and switch to landscape mode, and then pop it and choose portrait mode, the tabBar encounters an issue
Topic: UI Frameworks SubTopic: UIKit
Replies
1
Boosts
0
Views
73
Activity
Jan ’26
ShazamKit Background Operation Broken on iOS 18 - SHManagedSession Stops Working After ~20 Seconds
Your draft looks great! Here's a refined version with the iOS 17 comparison emphasized and slightly better flow: Hi Apple Engineers and fellow developers, I'm experiencing a critical regression with ShazamKit's background operation on iOS 18. ShazamKit's SHManagedSession stops identifying songs in the background after approximately 20 seconds on iOS 18, while the exact same code works perfectly on iOS 17. The behavior is consistent: the app works perfectly in the foreground, but when backgrounded or device is locked, it initially works for about 20 seconds then stops identifying new songs. The microphone indicator remains active suggesting audio access is maintained, but ShazamKit doesn't send identified songs in the background until you open the app again. Detection immediately resumes when bringing the app to foreground. My technical setup uses SHManagedSession for continuous matching with background modes properly configured in Info.plist including audio mode, and Background App Refresh e
Replies
1
Boosts
0
Views
395
Activity
Jan ’26
BLE audio packet loss on iPhone 17 (Bluetooth 6 / N1) in real-time streaming
Hello Apple Bluetooth team, We are developing a real-time call translation system that streams raw PCM audio over BLE between iPhone and custom earbuds. This works reliably on iPhone 14 / 15 / 16, but on iPhone 17 (Bluetooth 6, N1 chip) we see severe and repeatable BLE packet loss, affecting both microphone uplink and TTS downlink. Our audio stream 16 kHz, 16-bit mono PCM 20 ms frames (~640 bytes) continuous bidirectional BLE streaming What happens on iPhone 17 BLE packets are frequently dropped entire audio frames are missing results in ASR gaps and broken TTS playback occurs even with strong RSSI and no RF interference Same firmware, same BLE protocol, same MTU and connection interval work normally on older iPhones. Questions We would like to know: Did Bluetooth 6 / N1 change BLE throughput, buffering, or scheduling? Are there new limits on sustained notify / write-without-response traffic? Is BLE audio now arbitrated differently against Wi-Fi / A2DP on iPhone 17? Is BLE
Replies
2
Boosts
0
Views
285
Activity
Jan ’26
Reply to Push To Talk framework doesn't active audio session in background
However, your answer did trigger me to check that code again, and I noticed that I accidentally added .mixWithOthers to the options. And it seems that causes the audio session not to get activated when running in the background. Ahh... That makes sense. So, as a bit of a history, before late-iOS 12/13 the way PTT apps worked was that they used a mixable (non-mixable activation never worked) PlayAndRecord session. It's expected/allowed that mixable sessions are allowed to activate in the background (for example, it's how things like turn-by-turn directions work), but that probably shouldn't have been allowed for recording sessions, since it basically allows an app to start recording whenever it wants. To fix that, we disabled all background recording activation in late-iOS 12, so PTT apps were then moved to a CallKit-based workaround (iOS 12->iOS 15) and then later the PTT framework (iOS 16+). The CallKit workaround (as the PTT framework today) came with other major benefits[1], so the mixable sess
Topic: App & System Services SubTopic: General Tags:
Replies
Boosts
Views
Activity
Jan ’26
Reply to Xcode Cloud builds stuck at App Store Connect
Sounds like we may have a similar issue. We have a builds in Processing status for about 19 hours now (build submitted Jan 13, 2026 2:43 PM). We then submitted another build at Jan 13, 2026 9:21 PM and that one also remains in Processing status. These are builds 12 and 13, respectively, in a TestFlight distribution. All prior builds of this app moved from Processing to Complete in a matter of minutes.
Replies
Boosts
Views
Activity
Jan ’26
Reply to Push To Talk framework doesn't active audio session in background
I indeed used a simplified example for demonstration purposes where I didn't add the microphone permission and audio session setup. In my real application I do. However, your answer did trigger me to check that code again, and I noticed that I accidentally added .mixWithOthers to the options. And it seems that causes the audio session not to get activated when running in the background. So I removed that option and now everything is running fine! Also great to hear that it is ok to keep things running in the background when there is an active PTT session. It indeed improves the conversation flow a lot. Thanks!
Topic: App & System Services SubTopic: General Tags:
Replies
Boosts
Views
Activity
Jan ’26
Application hanging indefinitely after successful notarization
Hi, I have an app built in Unity that I am trying to sign an notarize for distribution. I can successfully codesign the app and it runs properly. But after successfully notarizing the app, the app stops opening. My process is as follows: # codesign the app. omitting --deep --option runtime or both will result in notarization failing codesign --force --deep --verify --verbose --option runtime --sign Developer ID Application: ORG NAME (ZZZZZZZZZ) path/to/app.app # create notarization submission zip /usr/bin/ditto -c -k --keepParent path/to/app.app path/to/app.zip # submit for notarization xcrun notarytool submit --wait path/to/app.zip -v --apple-id apple@id.com --password aaaa-aaaa-aaaa-aaaa --team-id ZZZZZZZZZ Notarization seems to succeed. Running: spctl -a -vvv -t install path/to/app.app -returns: path/to/app.app: accepted source=Notarized Developer ID origin=Developer ID Application: JOHN DOE (ZZZZZZZZZ) The Problem: Before code signature, the app runs normally After code signature, the app runs normally Af
Replies
1
Boosts
0
Views
263
Activity
Jan ’26
Reply to Push To Talk framework doesn't active audio session in background
Now the problem. When the application was initially in the foreground and has an established server connection, we initially keep the server connection active when the app enters the background state, until a certain timeout or the system decides our app needs to be killed/removed from memory. This allows us to finish an incoming audio stream, quickly react on incoming responses, etc. When we then receive an incoming audio stream after a certain delay (for example, 5 seconds), we call the channelManager.setRemoteParticipant method (using try await syntax). So, the short summary is that this should just work. More specifically, all PTT apps are allowed to initiate playback at any time by calling setRemoteParticipant(), even if they're in the background. In particular, what you're describing here: we initially keep the server connection active when the app enters the background state, until a certain timeout or the system decides our app needs to be killed/removed from memory. ...is actually p
Topic: App & System Services SubTopic: General Tags:
Replies
Boosts
Views
Activity
Jan ’26
Reply to APNS notifications - too quiet custom sound
Notification (and ringer) volume is an additional setting on top of the device volume in Settings. Settings -> Sound & Haptics -> Ringtone and Alerts slider will control the volume of the ringtone and various alert sounds including notifications, in addition to the device volume setting. If you have maxed that setting and the volume is not still satisfactory, and you have also maxed out your sound design, you may want to file a feature request or bug report at https://feedbackassistant.apple.com/ Bug Reporting: How and Why? has tips on creating a successful bug report.
Replies
Boosts
Views
Activity
Jan ’26
Reply to Crackling speakers on MacBook M1 Pro
Yes, I have the same (currently on my M4 Pro, previously on my M1 Pro). Specifically noticeable if you are running music in the background while working in Xcode. The 'solution' I have is to kill the audio daemon. It will then auto-restart and it's ok for at least a while. Use: 'sudo killall coreaudiod'.
Topic: App & System Services SubTopic: Hardware Tags:
Replies
Boosts
Views
Activity
Jan ’26
Crackling speakers on MacBook M1 Pro
My MacBook speakers have started crackling on every sound since macOS 26 Beta 1, the problem is still the same on Beta 9. Happens especially when Simulator is opened.
Replies
1
Boosts
0
Views
255
Activity
Jan ’26
Reply to Push To Talk framework doesn't active audio session in background
I've created an example app to demonstrate my problem. It can be found here: https://github.com/egeniq/ptt-audio-activation-test-ios To reproduce, do the following: Change team selection in Xcode. Run the app. Choose join. Tap on the Set remote participant NOW button. See in the log output that the audio session gets activated. Tap on the Clear remote participant button. See in the log output that the audio session gets deactivated. Tap on the Set remote participant after 5s button. Immediately go back to your phone's homescreen. After 5s see in the log output that the remote participant is successfully set. However also note that no audio session activation occurs.
Topic: App & System Services SubTopic: General Tags:
Replies
Boosts
Views
Activity
Jan ’26
Home App Intermittent Hub Not Responding Bug
I'm encountering a strange behavior with one of my home's on Home app while I'm off network. When I launch the app it indicates that the hub is not responding and all of my devices are unavailable. However, on the menu bar at the bottom if I switch to Automation and back to Home the pop-up goes away and my devices are accessible again (sometimes this take a few attempts). Siri is also able to consistently control my devices without an issue. The same behavior occurs with Home app on other devices (e.g. Mac) and with other members that have access to the household. 3rd party HomeKit app like Controller does not have an issue. This issue began with iOS 26 and I haven't had much luck resolving the issue. I already tried rebooting everything, including removing and re-adding an Apple TV (home hub). I have other homes shared with me in Home App with similar network/environment that are still working. The home I'm having issues has the most number of devices though (over 100+).
Replies
11
Boosts
0
Views
652
Activity
Jan ’26