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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iPad Bluetooth Keyboard Defaults to ANSI When Connected After App Launch (JIS Layout Issue)
I'm developing an iPad app and encountered a strange issue with external Bluetooth keyboards. Issue: I have a Bluetooth keyboard set to JIS layout in Settings > General > Keyboard > Hardware Keyboard > Keyboard Type. If I connect the keyboard before launching the app, everything works fine, and the input follows the JIS layout. However, if I launch the app first and then turn on the Bluetooth keyboard, the input behaves as if the keyboard is in ANSI layout, even though the settings still show JIS. It seems like iPadOS defaults to ANSI if no external keyboard is connected when the app starts, and later connections do not update the layout properly. Has anyone encountered a similar issue, and is there a programmatic way to ensure that the correct keyboard layout is applied after the keyboard is connected? Any help or insights would be greatly appreciated!
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46
Mar ’25
About USB accessory certification
I have a question about Apple certification. We are planning card reader via HID(human interface device) for iPad that support USB-C. iPad will receive data as HID protocol. In this case do I have to get certificate(for example MFi) like Apple USB accessory?
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Apr ’25
Dockkit ADK 1.0 Compatible Nordic SDK
While compiling nRF5340 target of Dockkit ADK 1.0 following the guide of README.md, I selected the latest Nordic SDK, because there is no specified SDK version in the README.md. But it seems that ADK and SDK are not compatible with each others. For example, it calls nrfx_gpiote_channel_alloc() with one argument in PAL\NCS\HAPPlatformExperience.c. But the difinition of this function needs two arguments. Also I found that in some older version of Nordic SDK, this function needs only one argument. So could you please make sure which version of Nordic SDK should developer use?
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67
Apr ’25
BLE timeout issue when connecting two devices on iOS 18 (but not iOS 16)
Hi, We’re developing a BLE peripheral device and encountered a connection issue when connecting two devices (Device A and Device B) simultaneously to an iOS device. Problem: On iOS 18, we are experiencing occasional BLE timeouts and disconnections when both devices are connected at the same time. On iOS 16, we did not encounter this issue under the same conditions. What we’ve tried: Adjusted the connection interval from 30ms to 15ms. This seems to have improved stability somewhat. However, we still observe intermittent timeout/disconnection issues. Questions: Are there any known changes in BLE connection handling or timing constraints in iOS 18? Are there recommended connection parameter settings (interval, latency, timeout, etc.) for multi-device BLE connections in iOS? Is there a way to debug or log more details about the disconnection reasons on the iOS side? Any guidance or suggestions would be greatly appreciated.
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79
Apr ’25
NSLocalizedDescription = \"Peer removed pairing information\";
After hardware and mobile phone hid mode pairing, the first connection is successful, after a while disconnect and reconnect,APP monitoring Bluetooth error NSLocalizedDescription = "Peer removed pairing information"; Failed to connect Hardware engineers detect the pairing information and find that the local pairing information of the iPhone has changed, which is a non-mandatory phenomenon
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94
Apr ’25
NFCTagReaderSession - Missing required entitlement
Hi there, I am using Core NFC and I established the connection with the card, but after sending the command 'tag.sendCommand()' I receive this message: -[NFCTagReaderSession _connectTag:error:]:748 Error Domain=NFCError Code=2 "Missing required entitlement" UserInfo={NSLocalizedDescription=Missing required entitlement}. The version of XCode I am using is 16.3, and the iPhone version is iOS 18.4 Here is my entitlements file: com.apple.developer.nfc.readersession.formats NDEF TAG And my info.plist: NFCReaderUsageDescription NFC com.apple.developer.nfc.readersession.iso7816.select-identifiers A000112233445566 Signing & Capabilities‌ has added Near Field Communication Tag Reading‌.
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219
Apr ’25
Matter device data pipeline
I'm device manufacturer and in future planning to get my device matter certified. If I want my device data for analytics purpose into my cloud than what is the best way possible. My research says that the most latest approach suggested by apple is, developing a custom mobile app using device homekit sdk and subscribe to device state and send it to my cloud. If I go that route, will it work even though the device was onboarded via homekit app and homekit hub device is also there. I want to make sure that both path will be active, device to hub to home app and device to custom app to my cloud, and both on matter ecosystem. The homekit sdk and matter support mentioned here https://developer.apple.com/apple-home/matter, are these two same thing?
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85
Apr ’25
Mic Button in Microsoft Web Chat Control Unresponsive in WKWebView After App Returns from Background (iOS)
We are integrating the Microsoft Web Chat Control inside a WKWebView in our iOS application. The microphone button (used for speech input) works as expected when the app is active. However, we are facing an issue when the app is sent to the background and then brought back to the foreground. Issue Details: When the app returns from background to foreground: 🔹 The mic button becomes unresponsive (taps are not recognized). 🔹 No permission prompt or speech functionality is triggered. 🔹 Other elements of the Web Chat control continue to work fine. This issue seems isolated to iOS and WKWebView usage. We have verified that microphone permissions are granted and there are no system-level blocks. Environment: Platform: iOS Web Container: WKWebView Microsoft Web Chat Version: Devanshu Kinariwala add version here iOS Version: iOS 18.3.1 Devices: iPhone 13, iPhone 14 Pro error in browser console [Error] A MediaStreamTrack ended due to a capture failure (x3) [Error] WebSocket connection to 'wss://directline.botframework.com/v3/directline/conversations/JQ1k0phVogeJ30ZQddBvAQ-in/stream?watermark=-&t=eyJhbGciOiJSUzI1NiIsImtpZCI6ImlmOEs0aFg4R1hXVnZkS3pwdFRFWFJveURTUSIsIng1dCI6ImlmOEs0aFg4R1hXVnZkS3pwdFRFWFJveURTUSIsInR5cCI6IkpXVCJ9.eyJib3QiOiJhaWFhcy1xYS1jb252YWktYm90Iiwic2l0ZSI6InRWcW14cDBQZU9vIiwiY29udiI6IkpRMWswcGhWb2dlSjMwWlFkZEJ2QVEtaW4iLCJuYmYiOjE3NDI5NzE1MTgsImV4cCI6MTc0Mjk3MTU3OCwiaXNzIjoiaHR0cHM6Ly9kaXJlY3RsaW5lLmJvdGZyYW1ld29yay5jb20vIiwiYXVkIjoiaHR0cHM6Ly9kaXJlY3RsaW5lLmJvdGZyYW1ld29yay5jb20vIn0.Mx3MMVP3t9Ex36UW-YARskZLny0iORxc6-B0ewvNp0S-ivUjvOS43kZc0J5HoOgYRkoGaKemo00_JSkzryAbKKoSwqMjahf0VotqTZsJjoIgtyNJFfAYyGVriBHMV_6FfH_YEezDMD5puY6R89eM-atQOw-CfoClwrxn8jgVL5Kn19WdDZvmQwFIArklA7as8bboKcWv4PveEKptM9xCokttaGzv-S5pdbNETMoJzIhLcJDHmEVJ6oJ0TFs5XS7RGMSQlM_gs95TySzVjVL7XV6qEOt_A10lRzmx0PxPIUw_nqllEIbWFy5H7AfsxbKRtM1nLe4lRm1KS7_xw9dSlw' failed: The operation couldn’t be completed. Software caused connection abort [Error] WebSocket connection to 'wss://eastus2.stt.speech.microsoft.com/speech/recognition/conversation/cognitiveservices/v1?language=en-US&format=detailed&Ocp-Apim-Subscription-Key=4JuKqIMwLMhgAxfORVDEYfiuTL6Hrbnj3isAeGfs7aks4AOltun6JQQJ99AKACHYHv6XJ3w3AAAYACOGJFYj&X-ConnectionId=A93B097C62F14C55B30A851798609F73' failed: The operation couldn’t be completed. Software caused connection abort [Error] WebSocket connection to 'wss://eastus2.stt.speech.microsoft.com/speech/recognition/conversation/cognitiveservices/v1?language=en-US&format=detailed&Ocp-Apim-Subscription-Key=4JuKqIMwLMhgAxfORVDEYfiuTL6Hrbnj3isAeGfs7aks4AOltun6JQQJ99AKACHYHv6XJ3w3AAAYACOGJFYj&X-ConnectionId=E99DF3A6CE734E0294A5FB5296D725CC' failed: The operation couldn’t be completed. Software caused connection abort [Error] WebSocket connection to 'wss://eastus2.stt.speech.microsoft.com/speech/recognition/conversation/cognitiveservices/v1?language=en-US&format=detailed&Ocp-Apim-Subscription-Key=4JuKqIMwLMhgAxfORVDEYfiuTL6Hrbnj3isAeGfs7aks4AOltun6JQQJ99AKACHYHv6XJ3w3AAAYACOGJFYj&X-ConnectionId=8B3370005E7A4946BEA174E804F64FF7' failed: The operation couldn’t be completed. Software caused connection abort Swift: // Method to check microphone permission func checkMicrophonePermission(completion: @escaping (Bool) -> Void) { let authorizationStatus = AVCaptureDevice.authorizationStatus(for: .audio) switch authorizationStatus { case .authorized: // Permission granted completion(true) case .notDetermined: // Request permission AVCaptureDevice.requestAccess(for: .audio) { granted in DispatchQueue.main.async { completion(granted) } } case .denied, .restricted: // Permission denied or restricted completion(false) @unknown default: // Handle future cases completion(false) } }
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66
May ’25
Find My Network System
Hey everyone, how’s it going? I’d like to know if, by enrolling in Apple’s MFi program, I’ll gain access to develop my own tags and my own app to track them using Apple’s Find network. I also read that there’s an estimated cost of $4 per device—does that apply to each device produced, or only at the time of registering the device, with no fee for additional units?
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119
May ’25
XPC Connection Error
I have an accessory with MFi authenticaiton passed(got 0xAA05) and identification accepted (got 0x1D02). But when I try to open the target stream by using iAP2 EA session framework, I always enounter the same error looking like: XPC connection error: Error Domain=NSCocoaErrorDomain Code=4099 "The connection to service named com.apple.accessories.externalaccessory-server was invalidated from this process." UserInfo={NSDebugDescription=The connection to service named com.apple.accessories.externalaccessory-server was invalidated from this process.} anybody can tell me what it related with? And what can I do to go through it quickly? Thank you much in advance.
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79
May ’25
Confused by what is allowed for System Level Apple Watch Bluetooth Connection. Does it require MFi or are there only some BLE chips allowed?
Hello. I am building a BLE device that is Activity Fitness based and would like a "System Level" BLE connection on WatchOS using an ESP32 (I have built a test of this on the firmware side). Meaning I do not want my iOS app to pass the BLE connection to the WatchOS app. It seems like these App Level connections do not get as many background updates as a System Level connection, and also requires the WatchOS app to be launched to connect to the BLE device The System Level BLE connection (WatchOS Settings > BLE > Health Devices) allows for auto connection in the background, and gets more reliable background communication between the BLE device and the Apple Watch On the Apple MFi Page it only mentions iOS: From Apple MFi Page: :: Who does NOT need to join - Developers and manufacturers of accessories that connect to an Apple device using only Bluetooth Low Energy, Core Bluetooth, or standard Bluetooth profiles supported by iOS Does this apply to WatchOS as well? So, if I am making an BLE device that is Activity Based, and has one of the allowable Health Device UUIDs, is the BLE System Connection allowed using any BLE chip? Including say an ESP32 I have built a test BLE firmware that is a Health Device UUID, and the WatchOS sees it as a health device Is this fine then? No need for MFi application and also no need to worry about which BLE chip is used? thanks
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95
May ’25
Is it possible to communicate with peripherals through the TypeC port of Apple 15 or above mobile phones?
I need to implement an app that exchanges data with peripherals through TypeC on Apple 15 phones, but I have two questions that I need to ask for help: Which library is used to communicate with peripherals through the TypeC port of the Apple mobile phone? Do peripherals need to pass MFi authentication before they can communicate with the App?
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62
May ’25