Hello, The application I'm working on must report new hardware connections. To retrieve connected displays information and monitor new connections, I'm using the "Core Graphics" framework (see recommendation https://developer.apple.com/forums/thread/779945). The monitoring logic relies on a callback function which invokes when the local display configuration changes(kCGDisplayAddFlag/kCGDisplayRemoveFlag). #import <Cocoa/Cocoa.h> static void displayChanged(CGDirectDisplayID displayID, CGDisplayChangeSummaryFlags flags, void *userInfo) { uint32_t vendor = CGDisplayVendorNumber(displayID); if (flags & kCGDisplayAddFlag) { if (vendor == kDisplayVendorIDUnknown) { NSLog(@"I/O Kit cannot identify the monitor. kDisplayVendorIDUnknown. displayId = %u", displayID); return; } NSLog(@"%u connected. vendor(%u)", displayID, vendor); } if (flags & kCGDisplayRemoveFlag) { NSLog(@"%u disconnected", displayID); } } int main(int argc, const char * argv[]) { @autoreleasepool { CGDisplayRegisterReconfigurationCallback(displayChanged, NULL); NSApplicationLoad(); CFRunLoopRun(); } return 0; } The test environment is a Mac mini with an external display connected via HDMI. Everything works correctly until the system enters sleep mode. Upon wakeup, the app reports two displays: the first with vendor ID kDisplayVendorIDUnknown and the second with the expected vendor ID. Why does Core Graphics report two connections during wakeup? Is there any way to avoid this? Thank you in advance.

Dear Apple Developer / MFi Program Support, I am exploring technical possibilities for screen sharing and remote interaction between iOS devices and external hardware (e.g., embedded systems, in-vehicle systems) for a prototype we are currently developing. I have reviewed the public iOS developer documentation, but I would appreciate your guidance and clarification on the following advanced use cases, particularly in the context of MFi or enterprise-level integrations: Full-Screen Sharing of iOS Device Is it possible to mirror or stream the entire iOS screen, even when the app is running in the background or not in the foreground? Does ReplayKit or any other framework under the MFi or enterprise entitlements allow full-device screen capture outside the app context? Remote Touch Injection and Control Is there any officially supported mechanism, under MFi or otherwise, that allows external systems to remotely control an iOS device’s touch interface (e.g., simulate gestures, taps, swipes)? Are any of the following permitted under special entitlements: Access to IOHIDEventSystem or similar private APIs for input injection? Communication over USB or network to relay control commands that simulate direct user interaction? Hardware-Level Integration and Entitlements Does the MFi Program allow: Use of private frameworks or entitlements to build low-level integrations for iOS device control or mirroring? Communication over USB/Lightning/USB-C to enable bi-directional interaction (streaming out, commands in)? What are the specific APIs or entitlements available under MFi that enable these use cases? Can you provide references to documentation, SDKs, or prerequisites for companies seeking such capabilities? Eligibility and Certification Process What are the criteria to be approved for the MFi program with access to such advanced capabilities? Can PoC or early-stage research prototypes be eligible, or is MFi access restricted to commercial production intent? How long does it typically take to gain access to these entitlements (assuming NDA and certification requirements are met)? Alternative Pathways If MFi access is not feasible in the short term, is there any Apple-supported alternative path (e.g., test device provisioning, enterprise signing, custom profiles) that permits more advanced capabilities for prototyping purposes? We are not looking to publish this as a general App Store app at this stage, but rather to demonstrate feasibility as part of an innovation prototype that may lead to further OEM-level engagement in the future. Thank you for your support and guidance. Best regards,

I’m currently experiencing a concerning battery issue on my MacBook Pro and wanted to share it here in case others are facing something similar or if it’s possibly tied to a software-level behavior. Device & Software Info: • MacBook Pro 14” (2023) • macOS 26.0(25A5316i) • Battery Cycle Count: 307 • Battery Health: 91% (as of today) • Condition: Normal Issue: • Battery health has dropped from 96% to 91% in less than a week. • For the last week each day, the maximum capacity seems to decline by 1%, even when usage is light and the Mac is plugged in most of the time with Battery Health Management enabled. • When the battery drops below 10%, it drains extremely fast — the percentage decreases nearly second by second, which doesn’t feel normal.

I have bought iphone 16 pro max on October 28, ( 9 months ago) and rarely dropped by battery health below 20%. I also set limit to 80% so I can preserve my Battery Health. I am not a multitasking user. I used fan to keep the phone cool during charging. But today I update to iOS26 public beta, It dropped to 99% at 88 Cycle which is quite low cycle. Many other user are getting their battery health dropped to 99% after 120, 130+ cycle with daily usage. Why mine got dropped after updating. I am quite unhappy with it, and iOS 26 is so jittery in my phone

<Version / Build> macOS 26 beta 4 (25A5316i) usbaudiod.txt CMAudioFormatDescriptionCreate.txt

Our app is connected to a hardware wifi without network. Under normal circumstances, we can communicate with the device. At some point, the communication suddenly stops, and the ping prompts "No route to host". The only way to reconnect is to restart the device. It feels like the system has marked ARP. Is there any way to reconnect the device without restarting the iphone?

We found that on some iPad devices (such as iPad8,9/iPad OS/18.5), when the media is playing, the recorded human voice is very small and is basically suppressed by the sound of the playing media. When the media is not playing, the human voice can be recorded. Likely when use screen recording with microphone, the ambient sound is also basically suppressed by the media sound.

Hello Apple Developers, I'm currently working on building a custom HomeKit Accessory using the HomeKit ADK v6.3 and running the Remote.OpenSSL sample on a Raspberry Pi 4 (64-bit Ubuntu / Linux Kernel 6.1.21-v8+). I'm trying to pair the accessory via the MFi HomeKit ADK pairing process. I've successfully compiled the ADK using: The application (Remote.OpenSSL) launches correctly, and the accessory server starts as expected, broadcasting via mDNS. However, when I attempt to initiate pairing via iOS (or simulate pairing), the following error occurs: Fault fatal error - HAPPlatformAccessorySetupLoadSetupInfo @ PAL/Linux/HAPPlatformAccessorySetup.c:93 This causes the application to crash.

I am developing an app that communicates with external BLE device over GATT. The device has a secure-read characteristic exposing some of it's data and requires pairing/bonding in order to communicate with it. I was able to pair and connect with the device using AccessorySetupKit and .bluetoothPairingLE option: let descriptor = ASDiscoveryDescriptor() descriptor.bluetoothServiceUUID = CBUUID(string: serviceUUID) descriptor.supportedOptions = [.bluetoothPairingLE] let picketItem = ASPickerDisplayItem(name: name, productImage: image, descriptor: descriptor) In this case when setting up accessory, I was prompted to compare passkeys and after confirming I can read the characteristic etc. Then I tried adding .confirmAuthorization to picker item and problems started: let descriptor = ASDiscoveryDescriptor() descriptor.bluetoothServiceUUID = CBUUID(string: serviceUUID) descriptor.supportedOptions = [.bluetoothPairingLE] let picketItem = ASPickerDisplayItem(name: name, productImage: image, desc pickerItem.setupOptions = [.confirmAuthorization] When setting up, I can see a passkey to be confirmed, but when confirmed the setup ui get's suck in loading state. Under the hood in logs, I can see that my app has connected to peripheral and was able to read the characteristic. I am unsure why the ui is stuck in loading state in this case. What is the difference when using .confirmAuthorization option and what should be the proper flow of events to setup accessory and then access protoected characteristic?

Hello, I want to try develop hearing aid based on stm32 with BLE Module. If I want to only stream music from iPhone, does I need mfi certification? And I want to develop application with changing program on device

Since updating to iOS 18.6 beta on my iPhone 13 ProMax, my battery usage has well over doubled. Also, my phone has become noticeably sluggish and unresponsive. For instance, after being charged to 100% my phone has dropped to 26% with only 1 hr 2m screen on time and 49m of screen off time. My phone gets noticeably warm to the touch, even through the case. Any ideas on the cause or any remedy?

Hello, I put the mac into hard reset, deleted all data and prepared for sale. But the restore did not complete and is in boot loop Can't go into recovery mode It is completely bricked or can be somehow "revived" as I read on the apple website. Thank you

Hi everyone, while testing HKWorkoutSession with HKLiveWorkoutBuilder on iOS 26 Beta (cycling workout), I noticed the following behavior: – Starting a cycling HKWorkoutSession automatically connects to my Bluetooth heart rate monitor and records HR into HealthKit ✅ – However, my Bluetooth cycling power meter and cadence sensor (standard BLE Cycling Power & CSC services) are not connected automatically, and no data is recorded into HealthKit ❌ On Apple Watch, when starting a cycling workout, these sensors do connect automatically and their data is written to HealthKit — which is exactly what I would expect on iOS as well. Question: Is this by design, or is support for power and cadence sensors planned for iOS in the same way as on watchOS? Or do we, as developers, need to implement the BLE Cycling Power and CSC profiles ourselves (via CoreBluetooth) if we want these metrics? Environment: – iOS 26 Beta – HKWorkoutSession & HKLiveWorkoutBuilder (cycling) – Bluetooth HRM connects automatically – BLE power & cadence sensors do not This feature would make it much easier to develop cycling apps with full HealthKit integration, and also create a more consistent user experience compared to watchOS. Thanks for any insights!

I am integrating a camera with HomeKit. The audio and video streams work in the HomeKit Accessory Tester, but they do not work when using the Home app on an iPhone (Failed to select audio config – Could not find the right match in the supported list. Session is not in progress). I have a single audio configuration: Opus 16kHz mono with a constant bitrate of 24kbps.

Hello Apple team and community, I’m reporting a critical issue affecting iPhone 13 (128 GB) on iOS 26 Public Beta 3. Problem Summary: • Device stays stuck at 1% battery, even while charging • Battery Health shows 0% in Settings • Phone reboots every 5 minutes while unplugged • Only works when connected to power • Cannot update, charge properly, or maintain uptime Additional Context: • The issue appeared immediately after installing iOS 26 beta 3 • Affected devices often have a replaced battery (even official or high-quality replacements) • Seems to be a software validation bug related to battery firmware • Reported by many users across Reddit, Apple Forums, and Twitter — but not listed in Known Issues What Has Been Tried: • Recovery Mode / Safe charging / Clean install (same version) – no effect • Third-party repair tools (ReiBoot, 3uTools) — partial workaround • Jailbreak with Nugget or iCleaner to disable crash daemons – temporarily helps • Apple Support suggested full device replacement (!) ⸻ Request: Please investigate and acknowledge this issue. This bug renders devices unusable for users with legitimate battery replacements — we need a fix in an upcoming beta.

first post here and this is kinda a long shot. I’m working on a custom keypad project for a young man with some mobility issues that unfortunately prevents gestrue and voice control as UI options. id like to see if I can pull track metadata via a Bluetooth connection into a custom keyboard with a small screen. I know hid doesn’t support this but I was hoping maybe the API for iOS’s blueprint remote app could be leveraged. I haven’t don’t much with Apple previousl. Usually Roku and Crestron implantations but I’m hoping to see if I can accomplish something with Apple, without needing to implement any IP connection.

Macbook pro M4 - will not accept any power adapter after beta update iPhone 16 pro - same exact problem Devices are dead Tried multiple chargers - Watch and IPad appear to be taking a charge for now..

Hi there! I'm developing a dual-mode bluetooth accessory and would like to pair it through AccessorySetupKit. I'm using an ESP32 with Bluekitchen btstack. This supports CTKD, which seems to be a requirement for the Bluetooth transport bridging according the WWDC19 session 901. I've been in contact with the btstack developer and verified that I can get the device to generate an LTK for the classic transport when reading an encrypted attribute. I'm not able to get this to work with the bluetoothTransportBriding option with AccessorySetupKit though. What I've found so far is that if I omit the .bluetoothTransportBriding option during pairing I will get a pairing request when I read an encrypted attribute after connecting with the CBConnectPeripheralOptionEnableTransportBridgingKey option. If I accept this request it seems like the system automatically brings up the A2DP profile. However if I include .bluetoothTransportBriding and/or .bluetoothPairingLE this option does not pop up, but the system does not bring up the A2DP profile. In this case things seem to end up in a weird situation where the device doesn't show up for pairing in Bluetooth Settings either, making it impossible to manually connect for A2DP. Based on the AccessorySetupKit example from WWDC24 I've created a dice accessory firmware for ESP32 using btstack. The code for this is available here: https://github.com/ljodal/esp32-btstack-ctkd-test I've also tweaked the AccessorySetupKit example app for iOS to add the ASAccessory.SupportOptions. The code for that is available here: https://github.com/ljodal/accessorysetupkit-ctkd-test Is there any documentation available anywhere on what is expected of the device for Bluetooth Transport Bridging to work with AccessorySetupKit?

Immediately after installing iOS 26 on my iPhone 14 Pro, my phone display stopped working. It's not responding to touch, but I can see it charging. It also wakes the screen whenever I pick it up, but it's not touching at all. What do I do, or do I have to downgrade?

Recently I got an issue on App Store that my build got rejected because of iPad Air 5. My app include Device binding which means sim should be present in Device while using the app, where as, I mad the app mainly for iPhone not for pads. But AppStore is rejecting my build saying getting no sim issue in iPad Air 5th gen And os 18.5 . So what should I do? Which device I should prefer so that I can use it future also , should not be outdated within some time.