iOS is the operating system for iPhone.

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IOS downgrade from 26 to 18
Hi developers, The iOS 18 has been unsigned since 09/23, which is much earlier than Apple usually does. In addition, the new features in IOS26 are tough to get used to; therefore, the sign for IOS18.7 is urgently needed by a large number of Apple users! Please see discussions on every social media across various languages.
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87
Oct ’25
Clean up render files saved to PHContentEditingOutput.renderedContentURL
I discovered when editing photos with the PhotoKit API, PHContentEditingOutput's renderedContentURL is a file in the app container's tmp directory with a filename that seems to follow the format render.<uuid>.JPG, and that file does not get deleted if the edit does not complete successfully (the user cancels the edit request, an error occurs, the app crashes, etc). I understand the system is supposed to automatically delete tmp files every once in a while, but some users are noticing my app's Documents & Data inflates, so I'm considering deleting these render files each time the app is launched. But I don't want to delete everything in the tmp directory as there could possibly be other data in there. What's the best way to remove those temporary files? Does the filename always start with render. no matter the device language? I thought I'd delete files in NSTemporaryDirectory() with that prefix but then I discovered in Mac Catalyst the location is not the tmp directory directly, they're in tmp/TemporaryItems/<bundleid>. Thanks!
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120
Oct ’25
Call Tracking with CallKit Works in Debug Mode but Not in Release (TestFlight) – iOS
I am working on an iOS app using Flutter that tracks outgoing calls using CallKit. The call tracking functionality works perfectly in Debug mode but does not work when the app is published to TestFlight. I have already added Background Modes (voip, audio, processing, fetch) in Info.plist. I have added CallKit.framework in Xcode under Link Binary With Libraries (set to Optional). <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> <plist version="1.0"> <dict> <key>aps-environment</key> <string>production</string> </dict> </plist> These are the necessary permission which I used in info.plist: <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> <plist version="1.0"> <dict> <key>BGTaskSchedulerPermittedIdentifiers</key> <array> <string>com.agent.mygenie</string> </array> <key>CADisableMinimumFrameDurationOnPhone</key> <true/> <key>CFBundleDevelopmentRegion</key> <string>$(DEVELOPMENT_LANGUAGE)</string> <key>CFBundleDisplayName</key> <string>MyGenie</string> <key>CFBundleDocumentTypes</key> <array/> <key>CFBundleExecutable</key> <string>$(EXECUTABLE_NAME)</string> <key>CFBundleIdentifier</key> <string>$(PRODUCT_BUNDLE_IDENTIFIER)</string> <key>CFBundleInfoDictionaryVersion</key> <string>6.0</string> <key>CFBundleName</key> <string>mygenie</string> <key>CFBundlePackageType</key> <string>APPL</string> <key>CFBundleShortVersionString</key> <string>$(FLUTTER_BUILD_NAME)</string> <key>CFBundleSignature</key> <string>????</string> <key>CFBundleVersion</key> <string>$(FLUTTER_BUILD_NUMBER)</string> <key>LSRequiresIPhoneOS</key> <true/> <key>NSCallKitUsageDescription</key> <string>This app needs access to CallKit for call handling</string> <key>NSContactsUsageDescription</key> <string>This app needs access to your contacts for calls</string> <key>NSMicrophoneUsageDescription</key> <string>This app needs access to microphone for calls</string> <key>NSPhotoLibraryUsageDescription</key> <string>This app needs access to photo library for profile picture updation</string> <key>UIApplicationSupportsIndirectInputEvents</key> <true/> <key>UIBackgroundModes</key> <array> <string>voip</string> <string>processing</string> <string>fetch</string> <string>audio</string> </array> <key>UILaunchStoryboardName</key> <string>LaunchScreen</string> <key>UIMainStoryboardFile</key> <string>Main</string> <key>UISupportedInterfaceOrientations</key> <array> <string>UIInterfaceOrientationPortrait</string> <string>UIInterfaceOrientationLandscapeLeft</string> <string>UIInterfaceOrientationLandscapeRight</string> </array> <key>UISupportedInterfaceOrientations~ipad</key> <array> <string>UIInterfaceOrientationPortrait</string> <string>UIInterfaceOrientationPortraitUpsideDown</string> <string>UIInterfaceOrientationLandscapeLeft</string> <string>UIInterfaceOrientationLandscapeRight</string> </array> [code.txt](https://developer.apple.com/forums/content/attachment/0a327dbd-652e-41d5-8811-c462d09e0567) </dict> </plist> And below is the file are AppDelegate.swift, call_tracking_mixin.dart, & main_call.dart file for full knowledge
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121
Mar ’25
unable to cancel test subscriptions
I tested a subscription with my developer account, it never charges but at the same time I can't cancel it anymore. It does not appear in the list of my official purchsed subscriptions. I tried to login to the sandbox with my developer account, but then when I click on "Manage" I just keep getting the error "Can't connect - retry". I have already tried to logout from all the services, App store, etc. and re-login, nothing worked. Is there anything I can do? Thanks in advance to anyone who can give any tips.
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86
Sep ’25
App Clip Card’s “Open” Button takes 2–3 seconds to become active on first load
We are currently implementing App Clips in our app. While we have carefully optimized the App Clip size to keep it lightweight (~3.69MB), we have noticed that on the first load, displaying the App Clip Card and activating the “Open” button takes a surprisingly long time (approximately 2–3 seconds). Subsequent loads appear to perform normally. We understand that this behavior may not be directly controllable from the app development side, but we would like to know if there are any possible ways to improve it. Minimizing the time it takes for users to access the content is extremely important, as delays on the first interaction can negatively impact the user experience. Any guidance or best practices to make the App Clip Card and its “Open” button respond faster on first load would be greatly appreciated.
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111
Sep ’25
UIDocumentPickerViewController dismisses presenting view controller when selecting a file multiple times quickly
Description When using UIDocumentPickerViewController with allowsMultipleSelection = false, I expect that selecting a file will dismiss only the document picker. However, if a user quickly taps the same file multiple times, the picker dismisses both itself and the presenting view controller (i.e., it pops two levels from the view controller stack), which leads to unintended behavior and breaks presentation flow. Expected Behavior Only UIDocumentPickerViewController should be dismissed when a file is selected—even if the user taps quickly or multiple times on the same file. Actual Behavior When tapping the same file multiple times quickly, the picker dismisses not only itself but also the parent view controller it was presented from. Steps to Reproduce Create a simple view controller and present another one modally over it. From that presented view controller, present a UIDocumentPickerViewController with allowsMultipleSelection = false. Tap quickly on the same file in the picker 2 times. Result: Both the document picker and the presenting view controller are dismissed. Reproducible Code Snippet class ViewController: UIViewController { override func viewDidLoad() { super.viewDidLoad() view.backgroundColor = .green addLabel("Parent View Controller") DispatchQueue.main.async { [unowned self] in let child = UIViewController() child.view.backgroundColor = .yellow present(child, animated: true) child.addLabel("Child View Controller") let vc = UIDocumentPickerViewController( forOpeningContentTypes: [.pdf, .jpeg, .png], asCopy: true ) vc.allowsMultipleSelection = false child.present(vc, animated: true) } } } extension UIViewController { func addLabel(_ text: String) { let label = UILabel(frame: CGRect(x: 0, y: 50, width: view.bounds.width, height: 30)) label.text = text view.addSubview(label) } } Environment Device: iPhone 15 Pro and others iOS version: 18.2 (reproduces on multiple iOS versions) Occurs with: .pdf, .jpeg, .png file types Mode: Both simulator and real device Notes Happens consistently with fast multiple taps on the same file. This breaks expected view controller stack behavior.
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134
Apr ’25
UIViewController memory leak with modal presentedViewController
Hi everyone, I'm encountering an unexpected behavior with modal presentations in UIKit. Here’s what happens: I have UIViewControllerA (let’s call it the "orange" VC) pushed onto a UINavigationController stack. I present UIViewControllerB (the "red" VC, inside its own UINavigationController as a .formSheet) modally over UIViewControllerA. After a short delay, I pop UIViewControllerA from the navigation stack. Issue: After popping UIViewControllerA, the modal UIViewControllerB remains visible on the screen and in memory. I expected that dismissing (popping) the presenting view controller would also dismiss the modal, but it stays. Expected Behavior: When UIViewControllerA (orange) is popped, I expect the modal UIViewControllerB (red) to be dismissed as well. Actual Behavior: The modal UIViewControllerB remains on screen and is not dismissed, even though its presenting view controller has been removed from the navigation stack. Video example: https://youtube.com/shorts/sttbd6p_r_c Question: Is this the expected behavior? If so, what is the recommended way to ensure that the modal is dismissed when its presenting view controller is removed from the navigation stack? Code snippet: class MainVC: UIViewController { private weak var orangeVC: UIViewController? override func viewDidLoad() { super.viewDidLoad() self.view.backgroundColor = .blue let dq = DispatchQueue.main dq.asyncAfter(deadline: .now() + 1) { [weak self] in let vc1 = UIViewController() vc1.view.backgroundColor = .orange vc1.modalPresentationStyle = .overCurrentContext self?.navigationController?.pushViewController(vc1, animated: true) self?.orangeVC = vc1 dq.asyncAfter(deadline: .now() + 1) { [weak self] in let vc2 = UIViewController() vc2.view.backgroundColor = .red vc2.modalPresentationStyle = .formSheet vc2.isModalInPresentation = true let nav = UINavigationController(rootViewController: vc2) if let sheet = nav.sheetPresentationController { sheet.detents = [.medium()] } self?.orangeVC?.present(nav, animated: true) dq.asyncAfter(deadline: .now() + 1) { [weak self] in self?.navigationController?.popViewController(animated: true) } } } } } Thank you for your help!
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120
Oct ’25
iOS app build error with iOS 18 SDK and Xcode 16
Hi, I am able to build my iOS app successfully, developed in objective-C with iOS 17.5 SDK and Xcode 15. Due to requirement of Appstore we are trying to build with iOS 18 SDK and Xcode 16. When building getting error in LAEnvironmentState.h file: a) "Property requires field to be named" b) "Expected member name or ';' after declaration specifiers" Same app when opening with Xcode 15 gets build without any issue. Any help/suggestion would be appreciated.
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158
Apr ’25
ScrollView paging position is off in iOS 26
Hi everyone, I have the following issue that I have tried to tweak every possible modifier of ScrollView and still got the same result in iOS 26. Description: Create a SwiftUI ScrollView with scrollTargetBehavior of paging, also create a bottom UI view below the ScrollView. If the starting index is not 0, the position of current page will be off with part of previous page shown above it. It only happens on iOS 26, not on iOS 18. Also if bottom UI view (text view in this case) is removed, it also works fine. I want to see if there is a solution for it or it's an iOS 26 bug. Thanks! import SwiftUI struct ContentView: View { @State private var currentPageIndex: Int? = 3 var body: some View { VStack { scrollView Text("Bottom Bar") .frame(maxWidth: .infinity) .frame(height: 80) .background(.red) } .background(.black) } @ViewBuilder var scrollView: some View { VerticalPagerView( currentPageIndex: $currentPageIndex, itemCount: 10, content: Array(0...9).map { index in content(for: index) } ) } @ViewBuilder private func content(for index: Int) -> some View { // Empty view with random background color Color( red: Double((index * 25 + 0) % 255) / 255.0, green: Double((index * 25 + 80) % 255) / 255.0, blue: Double((index * 25 + 160) % 255) / 255.0 ) } } struct VerticalPagerView<Content: View>: View { @Binding private var currentPageIndex: Int? private let itemCount: Int private let content: [Content] init( currentPageIndex: Binding<Int?>, itemCount: Int, content: [Content] ) { self._currentPageIndex = currentPageIndex self.itemCount = itemCount self.content = content } var body: some View { GeometryReader { geometryReader in ScrollViewReader { reader in ScrollView(.vertical) { LazyVStack(spacing: 0) { ForEach(0 ..< itemCount, id: \.self) { index in content[index] .id(index) .containerRelativeFrame(.vertical, alignment: .center) .clipped() } } .frame(minHeight: geometryReader.size.height) .scrollTargetLayout() } .scrollIndicators(.hidden) .onAppear { guard let currentPageIndex = currentPageIndex else { return } reader.scrollTo(currentPageIndex, anchor: .center) } } .scrollPosition(id: $currentPageIndex, anchor: .center) .ignoresSafeArea() .scrollTargetBehavior(.paging) .onChange(of: currentPageIndex) { oldIndex, newIndex in } } } }
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228
Sep ’25
Best Way to Help Users Diagnose iOS App Crashes with No UI Feedback
Hi all, We're working on an iOS application and would like to improve our ability to diagnose failures - especially in scenarios where the app crashes before it can present any UI to the user. A few specific questions: In case of an exception or crash, is there a way to log the issue so the user (or our support team) can understand the cause of the failure? If the app crashes abruptly (e.g., due to a runtime exception or crash during launch), is there a recommended way to persist error information before the process terminates? Are there Apple-supported mechanisms (like crash reporting tools or APIs) we can integrate that would help us capture such issues? What’s the best practice for enabling support teams to assist users based on crash reports - especially for crashes that happen before any user interaction? Our goal is to make sure users aren't left in the dark if the app fails to start, and to allow us to deliver timely updates or support based on the cause of the crash. Thanks in advance for your guidance!
Topic: UI Frameworks SubTopic: General Tags:
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104
May ’25
Disable Smart Punctuation from Webpage
I would like to know if there is a way to disable Smart Punctuation from the webpage rather than requiring the user to do so from the settings. Adding a "inputmode=verbatim" attribute to the input HTML tags for my webpage did that for all the web browsers I tested on Windows, Ubuntu, Android, and MacOS. I tested Chrome and Firefox on all platforms, as well as Edge on Windows and Safari on Mac and iOS. So far the only time it did not disable Smart Punctuation was on Safari on iOS, but it did on MacOS.
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123
Mar ’25
Branch Link Parameter Not Passed to App on iOS 26 when come from Safari
Dear Apple Support, We are encountering an issue with deep linking on iOS 26 when using Safari and App Store redirection. Below are the detailed steps to reproduce the problem: The app is not installed on the device. User clicks on a Branch link: For example:- https://qewed.app.link/99u88ef9f?uuid=88dbwh5ubd4b Safari opens and displays the fallback page. User taps on “Get the App”, which navigates to the App Store. User installs and opens the app. Expected Behavior:
The app should receive the Branch link parameters (in this case, uuid=88dbwh5ubd4b) upon first open. Actual Behavior:
The app opens successfully, but the uuid parameter is not passed to the app. This issue seems specific to the Safari → App Store → App flow on iOS 26, as other flows behave correctly. Could you please advise whether this is a known issue or if there are recommended adjustments on our side to ensure parameters are consistently delivered after App Store redirection? Note: We are using Branch SDK version 3.11.0 (Cocoapods dependency) Thank you for your assistance.
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203
Sep ’25
Vision Framework VNTrackObjectRequest: Minimum Valid Bounding Box Size Causing Internal Error (Code=9)
I'm developing a tennis ball tracking feature using Vision Framework in Swift, specifically utilizing VNDetectedObjectObservation and VNTrackObjectRequest. Occasionally (but not always), I receive the following runtime error: Failed to perform SequenceRequest: Error Domain=com.apple.Vision Code=9 "Internal error: unexpected tracked object bounding box size" UserInfo={NSLocalizedDescription=Internal error: unexpected tracked object bounding box size} From my investigation, I suspect the issue arises when the bounding box from the initial observation (VNDetectedObjectObservation) is too small. However, Apple's documentation doesn't clearly define the minimum bounding box size that's considered valid by VNTrackObjectRequest. Could someone clarify: What is the minimum acceptable bounding box width and height (normalized) that Vision Framework's VNTrackObjectRequest expects? Is there any recommended practice or official guidance for bounding box size validation before creating a tracking request? This information would be extremely helpful to reliably avoid this internal error. Thank you!
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118
Apr ’25
Custom Background Image Fails to Display on UIToolbar
I am encountering a critical issue where a custom background image on a UIToolbar fails to display when the app is built with Xcode 26 and run on iOS 26 beta. The exact same implementation works perfectly on iOS 18 and earlier versions. We first attempted to use the legacy setBackgroundImage method, which fails to render the image on iOS 26: // 1. Get Navigation Bar and set basic properties UINavigationBar* navBar = self.navigationBar; navBar.hidden = NO; navBar.translucent = NO; // 2. Setup the UIToolbar instance UIToolbar *toolBar = [[UIToolbar alloc] initWithFrame:navBar.bounds]; toolBar.autoresizingMask = UIViewAutoresizingFlexibleHeight | UIViewAutoresizingFlexibleWidth; // 3. Set the resizable image (This image does not appear on iOS 26) UIImage* imagePortrait = [UIImage imageNamed:@"nav_bg"]; UIEdgeInsets insets = UIEdgeInsetsMake(0.f, 6.f, 0.f, 6.f); [toolBar setBackgroundImage:[imagePortrait resizableImageWithCapInsets:insets] forToolbarPosition:UIToolbarPositionAny barMetrics:UIBarMetricsDefault]; We then migrated to the recommended modern UIToolbarAppearance to solve this, but the issue persists: // 1. Prepare Image UIImage* imagePortrait = [UIImage imageNamed:@"nav_bg"]; // Insets are applied via resizableImageWithCapInsets: (not shown in this snippet but implied) // 2. Configure UIToolbarAppearance UIToolbarAppearance *appearance = [[UIToolbarAppearance alloc] init]; appearance.backgroundImage = imagePortrait; // The image is correctly loaded (not nil) // 3. Apply the Appearance toolBar.standardAppearance = appearance; // We also applied to scrollEdgeAppearance and compactAppearance. Any information or recommended workarounds for displaying a custom background image on UIToolbar in the latest iOS 26 would be highly appreciated.
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325
Sep ’25
iOS 26 Public Beta Duplicate Contacts
I'm not sure at which beta it happened, but somewhere during the iOS 26 Public Beta releases, my iCloud Contacts have duplicated close to 100 times each. When I scroll to the bottom of the list to try and manage duplicates, it indicates I only have 2 duplicates. I should be sitting around 350 contacts and instead, I now have over 10k. Anyone else with this issue? I have filed Feedback in the app. I'm not certain if it was related to iOS 26 or iPadOS 26 as I have both, but noticed it first on my iPhone. I confirmed that the issue has affected my iCloud Contacts and therefore all of my Apple devices included older iOS and MacOS versions. Short of manually deleting all the duplicates, I'm at a loss as to how I can correct his.
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174
Sep ’25
IOS cursor control
My app controls the cursor movement in a text view on iPhone and iPads. On screen touch, the IOS cursor position is out of sync with the app cursor position. Is there a way to find out, on screen touch, where the ios cursor positition is and update the app cursor to the ios cursor position? When they are out of sync, the user has to move the cursor to the startIndex and navigate from there. Frustating! I have looked at many programming books, forums, and internet search with nothing to no avail. Any help will be greatly appreciated. The app names are SummaGramPhonex and SummaGramIPAD11 and SummaGramIPAD13. Thanks. Charlie 3Sep25
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187
Sep ’25
UIBarButtonItem Doesn't Reset the Badge
Hello, I hope you're all doing well! I'm currently working on integrating new iOS 26 features into my app, and so far, the process has been really exciting. However, I've encountered an issue when updating the badge of a UIBarButtonItem, and I’m hoping to get some insights or suggestions. The app has two UIViewController instances in the navigation stack, each containing a UIBarButtonItem. On the first controller, the badge is set to 1, and on the second, the badge is set to 2. In the second controller, there is a "Reset" button that sets the badge of the second controller to nil. However, when I tap the "Reset" button, instead of setting the badge to nil, it sets the value to 1. I would appreciate any ideas or suggestions on how to solve this problem. Maybe I am using the badge API incorrectly. Thank you! class ViewController: UIViewController { var cartButtonItem: UIBarButtonItem! override func viewDidLoad() { super.viewDidLoad() configureNavigationItem() } func configureNavigationItem() { cartButtonItem = UIBarButtonItem(image: UIImage(resource: .cartNavBar), style: .plain, target: self, action: #selector(showCartTab)) cartButtonItem.tintColor = UIColor.systemBlue cartButtonItem.badge = .count(1) navigationItem.rightBarButtonItem = cartButtonItem } @objc func showCartTab() { // Add second view controller in navigation stack performSegue(withIdentifier: "Cart", sender: nil) } } class CartViewController: UIViewController { var cartButtonItem: UIBarButtonItem! override func viewDidLoad() { super.viewDidLoad() configureNavigationItem() } func configureNavigationItem() { cartButtonItem = UIBarButtonItem(image: UIImage(resource: .cartNavBar), style: .plain, target: nil, action: nil) cartButtonItem.tintColor = UIColor.systemBlue cartButtonItem.badge = .count(2) navigationItem.rightBarButtonItem = cartButtonItem } func updateBadge() { cartButtonItem.badge = nil } @IBAction func resetButtonPressed(_ sender: Any) { updateBadge() } }
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119
Sep ’25
iOS deep link parameter handling when app is not installed and user is redirected to App Store
On iOS, I have a deep link that opens the app directly if it’s already installed. If the app is not installed, the user is first redirected to my website, which then automatically redirects them to the App Store. The deep link contains a parameter that should be passed to the app. On Android, this is possible because the Play Store provides a referrer ID after installation, which allows the app to fetch the parameter on first launch. What options are available on iOS to achieve the same behavior — i.e., preserving and passing the deep link parameter through the App Store install flow? I’m already aware of solutions like Branch.io, other deferred deep linking services, and the clipboard approach, so I’m looking for alternative approaches.
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164
Sep ’25