Hardware

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Delve into the physical components of Apple devices, including processors, memory, storage, and their interaction with the software.

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BLE Peripherals streaming speeds are significantly slowed with new hardware (iPhone 17, iPad A16)
Hi, we have developed an application that streams data from two BLE peripherals at a rate of 14.5kbps per peripheral. Until now, our devices streamed in near real time with no lag on all Apple devices with Bluetooth 5.0 or greater. Since the release of the iPhone 17 series and the iPad A16, we have reports from users of the data being streamed at significantly lower rates than expected. Any help here would be greatly appreciated as our customers are being affected by this change.
7
2
655
1w
[Matter] Device cannot be commissioned to Google Home through iOS
Hi, We are facing the issue of commissioning our Matter device to google home through iOS device will be 100% failed. Here is our test summary regarding the issue: TestCase1 [OK]: Commissioning our Matter 1.4.0 device to Google Nest Hub 2 by Android device (see log DoorWindow_2.0.1_Google_Success.txt ) TestCase2 [NG]: Commissioning Matter 1.4.0 device to Google Nest Hub 2 by iPhone13 or iPhone16 (see log DoorWindow_2.0.1_Google_by_iOS_NG.txt ) TestCase3 [OK]: Commissioning our Matter 1.3.0 device to Google Nest Hub 2 by iPhone13 In TestCase2, we noticed that device was first commissioned to iOS(Apple keychain) then iOS opened a commissioning window again to commission it in Google’s ecosystem, and the device was failed at above step 2, so we also tried: Commissioning the device to Apple Home works as expected, next share the device to Google Home app on iOS, this also fails. Commissioning the device to Apple Home works as expected, next share the device to Google Home app on Android, this works as expected and device pops up in Google home of iOS as well. Could you help check what's the issue of TestCase2? Append the environment of our testing: NestHub 2 version Google Home app version
4
1
229
1w
iPadOS problem with camera focus
After update to ipad OS 26.4 or latest 26.3., we’ve been experiencing issues with focusing. We have an app that scans 1x1 cm QR or DataMatrix codes from a distance of 10–20 cm, and users across different devices (ipad 9 and 10) are reporting problems. I didn’t find anything related to the camera in the version changelog, but users from various places are reporting problem with camera.
0
0
35
1w
DJI DNG
DJI's DNG files display abnormally in the Apple Photos app on iOS devices, with dark areas showing as very black, but the same files appear normal in Photoshop. I'm curious about what causes this issue.
0
0
24
1w
Core Bluetooth Events when enabling State Restoration
Hello dear Apple Platform Engineers, I'm working on an iOS App that connects to a Bluetooth Low Energy Peripheral in the foreground. Whenever the App moves into Background, we want to continue syncing data & therefore implemented State Restoration to be informed about Discovery, Connect, Disconnect or Characteristic changes in the Background in order to wake the App up whenever it was "Terminated due to memory issue". I consulted https://aninterestingwebsite.com/library/archive/documentation/NetworkingInternetWeb/Conceptual/CoreBluetooth_concepts/CoreBluetoothBackgroundProcessingForIOSApps/PerformingTasksWhileYourAppIsInTheBackground.html#//apple_ref/doc/uid/TP40013257-CH7-SW1 for this & assigned: CBCentralManagerOptionRestoreIdentifierKey Reinstantiate the dedicated CentralManager & implemented the centralManager(_ central: CBCentralManager, willRestoreState dict: [String : Any]) Delegate Additionally, I assigned the following keys on connect(_ peripheral: CBPeripheral, options: [String : Any]? = nil) CBConnectPeripheralOptionNotifyOnConnectionKey CBConnectPeripheralOptionNotifyOnDisconnectionKey CBConnectPeripheralOptionNotifyOnNotificationKey However, from my experience the App gets woken up, but neither the willRestoreState nor the didDiscover, didConnect or didDisconnectPeripheral is called even though launchOptions?[UIApplication.LaunchOptionsKey.bluetoothCentrals] as? [String] is not empty. What might I be missing when trying to make this approach work? Thanks a lot for any insights & support!
3
0
84
5d
Wallet no longer appear near iBeacon
Hello, We are testing Wallet passes with iBeacons in iOS 26 Beta. In earlier iOS releases, when a device was in proximity to a registered beacon, the corresponding pass would surface automatically. In iOS 26 Beta, this behavior no longer occurs, even if the pass is already present in Wallet. I have not found documentation of this change in the iOS 26 release notes. Could you please confirm whether this is expected in iOS 26, or if it may be a Beta-specific issue? Any pointers to updated documentation would be appreciated. Thank you.
5
2
347
4d
EADemo Not Sending/Recieving Session Packets
Hi, We are currently in the process of getting an custom iAP2 device communicating via USB-C. We have been using the 'EADemo' app as a test app to ensure full function before certification. Currently, the device completes the authentication and identification successfully. The device appears within the 'EADemo' app, and we are able to select it and see the available protocol. Selecting the protocol sends the EAStartSession command to the accessory and we ACK it. This is where the issues begin. Attempting to send either a string or hex packet results in nothing being sent. The app does not appear to attempt to send a packet when these are pressed. The 'EADemo' app also does not increment its receive counter when the accessory sends an EA packet, but we do receive the ACK from the device. This indicates the device is receiving the packet, but not processing it in app. Sending the EASessionStatus from the accessory with a status of okay does not change the behavior. Sending the EASessionStatus packet from the accessory with a status of closed results in the device sending an EAStopSession packet. The issue does not appear to be with the accessory or the underlying transport layer. Previous attempts to contact MFi support resulted in them referring me to developer support. Are there any known issues within the 'EADemo' app that we should know about/and or need to fix? Does Apple have any other EA example application? Are there any other publicly avalilbe EA examples that Apple would recommend us trying? Thanks, Mike
1
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37
4d
EASession(accessory:forProtocol:) always returns nil — MFI accessory iAP2
EASession(accessory:forProtocol:) always returns nil — MFI accessory iAP2 Platform: iOS 17+ | Hardware: Custom MFI-certified accessory (USB-C, iAP2) | Language: Swift Problem We have a custom MFI-certified accessory communicating over USB-C using ExternalAccessory. The app calls EASession(accessory:forProtocol:) after receiving EAAccessoryDidConnect but it always returns nil. We never get past session creation. What we have verified We captured a sysdiagnose on-device and analysed the accessoryd-packets log. The full iAP2 handshake completes successfully at the OS level: USB attach succeeds MFI auth certificate is present and Apple-issued Auth challenge and response complete successfully IdentificationInformation is accepted by iOS — protocol string and Team ID are correct EAAccessoryDidConnect fires as expected iOS sends StartExternalAccessoryProtocolSession — the OS-level session is established So the hardware, MFI auth, protocol string, and Team ID are all correct. Despite this, EASession(accessory:forProtocol:) returns nil in the app. We also confirmed: Protocol string in UISupportedExternalAccessoryProtocols in Info.plist matches the accessory exactly Protocol string in code matches Info.plist App entitlements are correctly configured EAAccessoryManager.shared().registerForLocalNotifications() is called before connection Current connection code @objc private func accessoryDidConnect(_ notification: Notification) { guard let accessory = notification.userInfo?[EAAccessoryKey] as? EAAccessory else { return } DispatchQueue.main.asyncAfter(deadline: .now() + 1.0) { self.tryConnectToAccessory() } } private func tryConnectToAccessory() { DispatchQueue.main.asyncAfter(deadline: .now() + 3.0) { for accessory in EAAccessoryManager.shared().connectedAccessories { let session = EASession(accessory: accessory, forProtocol: "") // session is always nil here } } } Questions The packet log shows a ~4 second gap between EAAccessoryDidConnect firing and iOS internally completing session readiness (StartExternalAccessoryProtocolSession). Is there a reliable way to know when iOS Is it actually ready to grant an EASession, rather than using a fixed delay? Is there a delegate callback or notification that fires when the accessory protocol session is ready to be opened, rather than relying on EAAccessoryDidConnect + an arbitrary delay? Are there any known conditions on iOS 17+ under which EASession returns nil even though the iAP2 handshake completed successfully at the OS level? Is retrying EASession after a nil result a supported pattern, or does a nil result mean the session will never succeed for that connection? Any guidance appreciated.
6
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195
19h
BLE Peripherals streaming speeds are significantly slowed with new hardware (iPhone 17, iPad A16)
Hi, we have developed an application that streams data from two BLE peripherals at a rate of 14.5kbps per peripheral. Until now, our devices streamed in near real time with no lag on all Apple devices with Bluetooth 5.0 or greater. Since the release of the iPhone 17 series and the iPad A16, we have reports from users of the data being streamed at significantly lower rates than expected. Any help here would be greatly appreciated as our customers are being affected by this change.
Replies
7
Boosts
2
Views
655
Activity
1w
[Matter] Device cannot be commissioned to Google Home through iOS
Hi, We are facing the issue of commissioning our Matter device to google home through iOS device will be 100% failed. Here is our test summary regarding the issue: TestCase1 [OK]: Commissioning our Matter 1.4.0 device to Google Nest Hub 2 by Android device (see log DoorWindow_2.0.1_Google_Success.txt ) TestCase2 [NG]: Commissioning Matter 1.4.0 device to Google Nest Hub 2 by iPhone13 or iPhone16 (see log DoorWindow_2.0.1_Google_by_iOS_NG.txt ) TestCase3 [OK]: Commissioning our Matter 1.3.0 device to Google Nest Hub 2 by iPhone13 In TestCase2, we noticed that device was first commissioned to iOS(Apple keychain) then iOS opened a commissioning window again to commission it in Google’s ecosystem, and the device was failed at above step 2, so we also tried: Commissioning the device to Apple Home works as expected, next share the device to Google Home app on iOS, this also fails. Commissioning the device to Apple Home works as expected, next share the device to Google Home app on Android, this works as expected and device pops up in Google home of iOS as well. Could you help check what's the issue of TestCase2? Append the environment of our testing: NestHub 2 version Google Home app version
Replies
4
Boosts
1
Views
229
Activity
1w
iPadOS problem with camera focus
After update to ipad OS 26.4 or latest 26.3., we’ve been experiencing issues with focusing. We have an app that scans 1x1 cm QR or DataMatrix codes from a distance of 10–20 cm, and users across different devices (ipad 9 and 10) are reporting problems. I didn’t find anything related to the camera in the version changelog, but users from various places are reporting problem with camera.
Replies
0
Boosts
0
Views
35
Activity
1w
DJI DNG
DJI's DNG files display abnormally in the Apple Photos app on iOS devices, with dark areas showing as very black, but the same files appear normal in Photoshop. I'm curious about what causes this issue.
Replies
0
Boosts
0
Views
24
Activity
1w
Core Bluetooth Events when enabling State Restoration
Hello dear Apple Platform Engineers, I'm working on an iOS App that connects to a Bluetooth Low Energy Peripheral in the foreground. Whenever the App moves into Background, we want to continue syncing data & therefore implemented State Restoration to be informed about Discovery, Connect, Disconnect or Characteristic changes in the Background in order to wake the App up whenever it was "Terminated due to memory issue". I consulted https://aninterestingwebsite.com/library/archive/documentation/NetworkingInternetWeb/Conceptual/CoreBluetooth_concepts/CoreBluetoothBackgroundProcessingForIOSApps/PerformingTasksWhileYourAppIsInTheBackground.html#//apple_ref/doc/uid/TP40013257-CH7-SW1 for this & assigned: CBCentralManagerOptionRestoreIdentifierKey Reinstantiate the dedicated CentralManager & implemented the centralManager(_ central: CBCentralManager, willRestoreState dict: [String : Any]) Delegate Additionally, I assigned the following keys on connect(_ peripheral: CBPeripheral, options: [String : Any]? = nil) CBConnectPeripheralOptionNotifyOnConnectionKey CBConnectPeripheralOptionNotifyOnDisconnectionKey CBConnectPeripheralOptionNotifyOnNotificationKey However, from my experience the App gets woken up, but neither the willRestoreState nor the didDiscover, didConnect or didDisconnectPeripheral is called even though launchOptions?[UIApplication.LaunchOptionsKey.bluetoothCentrals] as? [String] is not empty. What might I be missing when trying to make this approach work? Thanks a lot for any insights & support!
Replies
3
Boosts
0
Views
84
Activity
5d
Wallet no longer appear near iBeacon
Hello, We are testing Wallet passes with iBeacons in iOS 26 Beta. In earlier iOS releases, when a device was in proximity to a registered beacon, the corresponding pass would surface automatically. In iOS 26 Beta, this behavior no longer occurs, even if the pass is already present in Wallet. I have not found documentation of this change in the iOS 26 release notes. Could you please confirm whether this is expected in iOS 26, or if it may be a Beta-specific issue? Any pointers to updated documentation would be appreciated. Thank you.
Replies
5
Boosts
2
Views
347
Activity
4d
EADemo Not Sending/Recieving Session Packets
Hi, We are currently in the process of getting an custom iAP2 device communicating via USB-C. We have been using the 'EADemo' app as a test app to ensure full function before certification. Currently, the device completes the authentication and identification successfully. The device appears within the 'EADemo' app, and we are able to select it and see the available protocol. Selecting the protocol sends the EAStartSession command to the accessory and we ACK it. This is where the issues begin. Attempting to send either a string or hex packet results in nothing being sent. The app does not appear to attempt to send a packet when these are pressed. The 'EADemo' app also does not increment its receive counter when the accessory sends an EA packet, but we do receive the ACK from the device. This indicates the device is receiving the packet, but not processing it in app. Sending the EASessionStatus from the accessory with a status of okay does not change the behavior. Sending the EASessionStatus packet from the accessory with a status of closed results in the device sending an EAStopSession packet. The issue does not appear to be with the accessory or the underlying transport layer. Previous attempts to contact MFi support resulted in them referring me to developer support. Are there any known issues within the 'EADemo' app that we should know about/and or need to fix? Does Apple have any other EA example application? Are there any other publicly avalilbe EA examples that Apple would recommend us trying? Thanks, Mike
Replies
1
Boosts
0
Views
37
Activity
4d
EASession(accessory:forProtocol:) always returns nil — MFI accessory iAP2
EASession(accessory:forProtocol:) always returns nil — MFI accessory iAP2 Platform: iOS 17+ | Hardware: Custom MFI-certified accessory (USB-C, iAP2) | Language: Swift Problem We have a custom MFI-certified accessory communicating over USB-C using ExternalAccessory. The app calls EASession(accessory:forProtocol:) after receiving EAAccessoryDidConnect but it always returns nil. We never get past session creation. What we have verified We captured a sysdiagnose on-device and analysed the accessoryd-packets log. The full iAP2 handshake completes successfully at the OS level: USB attach succeeds MFI auth certificate is present and Apple-issued Auth challenge and response complete successfully IdentificationInformation is accepted by iOS — protocol string and Team ID are correct EAAccessoryDidConnect fires as expected iOS sends StartExternalAccessoryProtocolSession — the OS-level session is established So the hardware, MFI auth, protocol string, and Team ID are all correct. Despite this, EASession(accessory:forProtocol:) returns nil in the app. We also confirmed: Protocol string in UISupportedExternalAccessoryProtocols in Info.plist matches the accessory exactly Protocol string in code matches Info.plist App entitlements are correctly configured EAAccessoryManager.shared().registerForLocalNotifications() is called before connection Current connection code @objc private func accessoryDidConnect(_ notification: Notification) { guard let accessory = notification.userInfo?[EAAccessoryKey] as? EAAccessory else { return } DispatchQueue.main.asyncAfter(deadline: .now() + 1.0) { self.tryConnectToAccessory() } } private func tryConnectToAccessory() { DispatchQueue.main.asyncAfter(deadline: .now() + 3.0) { for accessory in EAAccessoryManager.shared().connectedAccessories { let session = EASession(accessory: accessory, forProtocol: "") // session is always nil here } } } Questions The packet log shows a ~4 second gap between EAAccessoryDidConnect firing and iOS internally completing session readiness (StartExternalAccessoryProtocolSession). Is there a reliable way to know when iOS Is it actually ready to grant an EASession, rather than using a fixed delay? Is there a delegate callback or notification that fires when the accessory protocol session is ready to be opened, rather than relying on EAAccessoryDidConnect + an arbitrary delay? Are there any known conditions on iOS 17+ under which EASession returns nil even though the iAP2 handshake completed successfully at the OS level? Is retrying EASession after a nil result a supported pattern, or does a nil result mean the session will never succeed for that connection? Any guidance appreciated.
Replies
6
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0
Views
195
Activity
19h