Delve into the world of built-in app and system services available to developers. Discuss leveraging these services to enhance your app's functionality and user experience.

Posts under General subtopic

Post

Replies

Boosts

Views

Activity

Critical Technical Issue: App Update Rendering iPhones Inoperative on iOS 16 Versions
We appreciate your suggestion to use the Apple Developer Forums. However, we must respectfully request further escalation of this issue beyond the forums for several critical reasons: Severity and Scope: This is not a general development discussion topic. We are facing a massive, reproducible performance issue on iOS 16 that renders devices unresponsive, requiring factory resets or DFU restores. This goes far beyond typical app bugs and points to a potential systemic issue in the OS's image handling. Insufficiency of Forum Support: While the forums are a valuable resource for community advice, they cannot provide the official, in-depth technical diagnosis from Apple engineers that this situation demands. Our users' devices are being bricked by an app update that passed App Review, and we require clarity on the root cause to prevent further damage and restore user trust. Code-Level Support Eligibility: As members of the Apple Developer Program, we believe our issue falls under the purview of Code-Level Support, as described on the Apple Developer website 9. Our problem involves "building or running software" and requires expertise in Apple's frameworks and hardware-level image rendering APIs. We request that our case be forwarded to that specialized team. To reiterate the core problem: Our update introduced 1024x1026 JPEG assets into the Asset Catalog. On iOS 16, this causes severe overheating, freezing, and device unresponsiveness. Replacing them with PNGs completely resolves the issue. This suggests a potentially serious regression in iOS 16's JPEG decoding or memory management pipeline. We prepared to provide a sample project that demonstrates the issue if required. Our case number is 102678393572. We urgently need to understand why this happens at the OS level to ensure our app is safe and to contribute to the stability of the iOS platform. Please escalate this case to the appropriate technical team for a detailed investigation. Sincerely,
2
0
79
1w
iOS 26 beta 8 – AlarmKit – Custom sounds in Library/Sounds do not play
I put a test.mp3 (30 sec) file into the App Bundle. I scheduled an AlarmKit alarm with the file name test.mp3. The custom sound plays ✅ I copied the file from the App Bundle to Library/Sounds/test2.mp3. I scheduled an AlarmKit alarm with the file name test2.mp3. Instead of playing the custom sound, it falls back to the default sound ❌ According to the documentation, sounds placed in Library/Sounds should be playable: I filed report FB19779004 on August 20, but haven’t received any response yet. This functionality is critical for our use case, so could you please let me know whether this is expected to be fixed soon, or if I’m misunderstanding the intended behavior?
2
1
91
1w
Regarding network interface name with dual SIM iPhone
I investigated what network interface names are assigned to carrier networks on a dual SIM iPhone by examining the output of getifaddrs(). (An part of the program used for this is provided below.) ////////////// struct ifaddrs *interfaces = NULL; struct ifaddrs *an_interface = NULL; if (0 == getifaddrs(&interfaces)) { an_interface = interfaces; while (an_interface != NULL) { if( an_interface->ifa_addr->sa_family == AF_INET) { NSString* name = [NSString stringWithUTF8String:an_interface->ifa_name]; NSLog(@"Interface name is: %@", name); } an_interface = an_interface->ifa_next; } } freeifaddrs(interfaces); In this investigation, it appeared that the interface name for the sXGP SIM selected under "iPhone > Settings > Cellular > Cellular Data" was always "pdp_ip0". (A screenshot of "Cellular Data" is provided below. this is sample of sXGP selected )" [QUESTION] Is the SIM selected in Settings of iPhone always assigned to "pdp_ip0"? [BACKGROUND] I am developing a VoIP application and opening sockets by specifying IP addresses for communication. On a dual SIM iPhone, multiple networks (IP addresses) are visible. Therefore, I need to determine which network to use. My question is whether I can reliably make this decision based on the network interface name. If the SIM selected in Settings is always assigned to "pdp_ip0", I intend to open the socket using the IP address of "pdp_ip0". Alternatively, should I use a different method to select the appropriate network interface?
1
0
72
1w
Live Caller ID Lookup - Error on Refresh PIR Parameters
Hello. I've implemented the Live Caller ID Lookup feature in my app, but sometimes I get a weird error. When I call LiveCallerIDLookupManager.shared.refreshPIRParameters(...) from my app, it sometimes throws an error: Error Domain=com.apple.CipherML Code=1100 "Unable to query status due to errors: The resource could not be loaded because the App Transport Security policy requires the use of a secure connection." UserInfo={NSLocalizedDescription=Unable to query status due to errors: The resource could not be loaded because the App Transport Security policy requires the use of a secure connection., NSUnderlyingError=0x118f65740 {Error Domain=NSURLErrorDomain Code=-1022 "The resource could not be loaded because the App Transport Security policy requires the use of a secure connection." UserInfo={NSLocalizedDescription=The resource could not be loaded because the App Transport Security policy requires the use of a secure connection., NSErrorFailingURLKey=http://www.example.com/config}}} What does this error mean? And where did the example.com part come from? What should I do to get rid of this error? My Service URL is hardcoded in the Live Caller ID Lookup Extension of my app and it is definitely not example.com.
1
0
73
1w
I'm implementing an UnwantedCommunicationReporting extension and need clarification on which message types are supported for spam reporting functionality.
Based on the documentation, I understand that the UnwantedCommunicationReporting extension works with SMS and MMS messages. However, I'd like official confirmation about support for different message types: SMS: Appears to be supported ✅ MMS: Appears to be supported ✅ RCS (Rich Communication Services): Support unclear ❓ iMessage: Support unclear ❓
1
1
66
1w
Confused by new Swift XPC API's xpc_listener_t and xpc_session_t types
Hey! I'm trying to create an XPC messaging feature between my daemon and main application. I'm trying to use the new Swift low-level API available from macOS 14.0. The documentation is extremely confusing when looking at it from Swift: The xpc_listener_t type Seems to be something I shouldn't use in the Swift API, and would rather have to use XPCListener. Also, it appears to have no public API other than the xpc_listener_set_peer_code_signing_requirement function. Which would make it impossible to create this type. However, when going into xpc.h, one can see that there is an API in fact: API_AVAILABLE(macos(14.0), macCatalyst(17.0)) API_UNAVAILABLE(ios, tvos, watchos) XPC_EXPORT XPC_SWIFT_NOEXPORT XPC_RETURNS_RETAINED XPC_WARN_RESULT xpc_listener_t _Nullable xpc_listener_create(const char * service, dispatch_queue_t _Nullable target_queue, xpc_listener_create_flags_t flags, xpc_listener_incoming_session_handler_t incoming_session_handler, xpc_rich_error_t _Nullable * _Nullable error_out); which is a very unusual declaration - the first parameter for example shows up as Int8 type in Swift. Not to mention I haven't been able to create the next parameter, xpc_listener_create_flags_t at all, even though it seems to be a UInt64-based flag based on the C declaration, but passing UInt64(0) throws a compiler error. It really seems like something I shouldn't use from Swift. But then again, the extremely important security-related API mentioned above, xpc_listener_set_peer_code_signing_requirement can only take an xpc_listener_t object as a parameter, not an XPCListener type. There seems to be no conversion available between the two. However the documentation in the XPC framework seems to be telling the story of these two types being very equal, because of the following: The xpc_session_t type seemingly again has only deprecated methods mostly, the important one staying behind is xpc_session_set_peer_code_signing_requirement. However, this would again require the creation of an xpc_session_t object, for which in the XPC framework one will find declarations like: @available(macOS, introduced: 13.0, deprecated: 14.0, renamed: "XPCSession") @available(macCatalyst, introduced: 16.0, deprecated: 17.0, renamed: "XPCSession") @available(iOS, unavailable) @available(tvOS, unavailable) @available(watchOS, unavailable) public typealias xpc_session_t = OS_xpc_object plus basically all API of XPCSession being originally declared as xpc_session_* APIs and all of them having deprecated: 14.0, renamed: * marks. This is telling me xpc_session_t and XPCSession are in fact the same/same-ish. But again, there is seemingly no conversion between these two types. Which brings me to again being unable to create a code signing requirement for the XPCSession object. I've read some older forum posts, and I saw Apple Engineers admitting the code signing requirement APIs are missing from the new Swift APIs, however they seem to have been added in macOS 14.4 - although it appears to have been mistakenly added to the C-family functions, which have not been exposed to Swift correctly, because they still use the deprecated xpc_listener_t and xpc_session_t types. So my question is: what is going on here? :) Making XPC connections without a code signing requirement in 2025 seems like a no-go, so do I have to still stick with C - even though this new API seems to be focused on Swift?
3
1
63
1w
Eligibility for Default Dialer Capability in EU
Hello, I noticed the new entitlement in iOS 26 under LiveCommunicationKit: Preparing your app to be the default dialer app. My question is about eligibility: If a developer account is registered in the EU, can any app add the Default Dialer capability, or is it restricted only to apps that provide real calling/communication functionality (e.g., WhatsApp, Telegram, Skype)? If granted, does this capability allow the app to make/receive cellular calls and access call history, or is it limited only to VoIP-style scenarios through CallKit integration? What are the minimum functionalities required to support this feature (e.g., having a dial pad, call history screen, etc.)? Why must the developer account be registered in the EU to use this entitlement? Thanks in advance for the clarification!
1
0
28
1w
Default dialer abilities & limitations
I've been trying to understand what kind of UX is available if my app is using the default-dialer capability. I have found https://developer.apple.com/documentation/livecommunicationkit/preparing-your-app-to-be-the-default-dialer-app and I am in the EU. On android I built the UX I want and it's quite neat, so now I'm trying to work. out what I can get on iOS. Because the product is kind of worthless with just android. I have built a simple dialer ux with a numberpad, contact lookup etc. Then when the user presses the Call button does it have to pop up the system prompt "Call number"? Does it have to swap over to the system ui for the actual call? So there's no way to show information about the call, during the call? Or am I using the frameworks incorrectly? I am very new to iOS development. TrueCaller and others show validation, but as I understand it they pre-fetch all the data, I can't do that.
1
0
76
1w
Call Blocking (CallKit) not working on iOS 26 Public Beta
Call blocking using a third-party CallKit app is not longer working with the latest iOS 26 Public Beta (23A5297m). We've tried several different Call Blocking apps (that used to work fine on iOS 18.5) and their call blocking functionality is not working anymore. All calls pass through and the phone rings on those "blocked" numbers. We got several user complaints about our app that is not working on iOS 26 Public Beta. We've filed 2 bug reports with Feedback Assistant: FB19140680 FB19140594 Please fix this issue in the next Beta versions of iOS 26 to have a stable iOS 26 release in the future. Thank you in advance.
25
0
658
1w
[iOS 26] For call reported in lockscreen, after updating the CXCallUpdate for an active callkit reported call with reportCallWithUUID:updated:. The display namer in the callkit UI is not getting updated.
For call reported in lockscreen, after updating the CXCallUpdate for an active callkit reported call with reportCallWithUUID:updated:. The display namer in the callkit UI is not getting updated. This issue exists from iOS 18 and later. Issue is always seen. Feedback updated with iOS 26 beta logs: FB13969440
1
0
88
1w
iOS 26 regression: `DeviceActivityEvent`: `eventDidReachThreshold` called immediately (instead of waiting till threshold is reached)
Hello! I am experiencing some strange bugs around DeviceActivityEvents: When creating a DeviceActivityEvent we can assign a threshold and applicationTokens. The idea is, that after the user has spent said threshold on said apps, eventDidReachThreshold is called. includesPastActivity is set to false. On iOS 26 however, it happens (quite reliably after updating to a new beta seed) quite often that eventDidReachThreshold is called immediately (after a couple of seconds) instead of waiting for the threshold to be met. Is anyone else seeing similar issues on iOS 26? Only workaround I have found is to ask users to re-grant Screen Time permissions. This only holds for about two weeks though or at most until the next iOS 26 beta update is installed. Feedback filed under: FB18061981 FB18927456
8
1
340
1w
Universal links stopped working, CDN responds with 404 for our domain
From some moment of time, Universal Links stopped working for our app. As per my understanding, application reinstall or update caused system to fetch AASA file from CDN, which started to reply with 404 for our domain (https://app-site-association.cdn-apple.com/a/v1/app.link.digidentity.eu). In the meantime, nothing has changed inside our app or on our BE (https://app.link.digidentity.eu/.well-known/apple-app-site-association). Executing "curl -v https://app-site-association.cdn-apple.com/a/v1/app.link.digidentity.eu" returns following result * IPv6: (none) * IPv4: 17.253.15.197, 17.253.29.202, 17.253.37.203, 17.253.37.208, 17.253.57.197, 17.253.57.208, 17.253.29.196 * Trying 17.253.15.197:443... * Connected to app-site-association.cdn-apple.com (17.253.15.197) port 443 * ALPN: curl offers h2,http/1.1 * (304) (OUT), TLS handshake, Client hello (1): * CAfile: /etc/ssl/cert.pem * CApath: none * (304) (IN), TLS handshake, Server hello (2): * (304) (IN), TLS handshake, Unknown (8): * (304) (IN), TLS handshake, Certificate (11): * (304) (IN), TLS handshake, CERT verify (15): * (304) (IN), TLS handshake, Finished (20): * (304) (OUT), TLS handshake, Finished (20): * SSL connection using TLSv1.3 / AEAD-CHACHA20-POLY1305-SHA256 / [blank] / UNDEF * ALPN: server accepted http/1.1 * Server certificate: * subject: C=US; ST=California; O=Apple Inc.; CN=app-site-association.cdn-apple.com * start date: Jul 7 00:05:26 2025 GMT * expire date: Sep 30 19:08:48 2025 GMT * subjectAltName: host "app-site-association.cdn-apple.com" matched cert's "app-site-association.cdn-apple.com" * issuer: CN=Apple Public Server ECC CA 11 - G1; O=Apple Inc.; ST=California; C=US * SSL certificate verify ok. * using HTTP/1.x > GET /a/v1/app.link.digidentity.eu HTTP/1.1 > Host: app-site-association.cdn-apple.com > User-Agent: curl/8.7.1 > Accept: */* > * Request completely sent off < HTTP/1.1 404 Not Found < Apple-Failure-Details: {"cause":"dial tcp: lookup app.link.digidentity.eu on 10.100.53.53:53: dial tcp 10.100.53.53:53: connect: connection refused"} < Apple-Failure-Reason: SWCERR00302 Network error (temporary) < Apple-From: https://app.link.digidentity.eu/.well-known/apple-app-site-association < Apple-Try-Direct: true < Cache-Control: max-age=3600,public < Content-Length: 10 < Content-Type: text/plain; charset=utf-8 < Date: Thu, 21 Aug 2025 10:36:47 GMT < Vary: Accept-Encoding < Expires: Thu, 21 Aug 2025 10:36:57 GMT < Age: 2952 < Via: http/1.1 uklon5-vp-vst-011.ts.apple.com (acdn/1.16221), https/1.1 uklon5-vp-vfe-007.ts.apple.com (acdn/4.16219), http/1.1 defra1-edge-lx-005.ts.apple.com (acdn/260.16276), http/1.1 defra1-edge-bx-006.ts.apple.com (acdn/260.16276) < X-Cache: hit-fresh, hit-stale, hit-fresh, hit-fresh < CDNUUID: e06b4b03-f97d-48f8-97bb-774359a39fa2-4464142837 < Connection: keep-alive < Not Found * Connection #0 to host app-site-association.cdn-apple.com left intact On our end, we did not find any reason why it can be not available for Apple to fetch. Is SWCERR00302 an indication of problem on our end? Any help is appreciated
0
0
74
1w
Opening Main App from Screen Time Configuration Action Extension
I'm working on an app for iOS that will help people get tasks done. Within the app, we use a ManagedSettingsStore to let the user setup distracting apps. When the user opens any of those apps while it is being shielded, our ShieldConfiguration target opens and displays a screen that we configure with the description of the task they are supposed to do. On the bottom of the view, there are two buttons, one to start the task, and another to dismiss and return to their home screen. I want to have the button that starts the task open up the main application and deeplink to the focus view with the task that they started. Currently, the only thing that we can tell the system to do is via a ShieldActionResponse which is an enum with 3 cases: none, close, or defer. None of these three allow us to open the main application. I have found no workarounds that allow us to do it either. I've tried creating a custom URL scheme and calling UIApplication.shared.open(url), but there is no shared application available within the action extension. I have tried using a NSExtensionContext to open a url, but that does not work either. I have even tried starting a live activity to show the user what task they are working on and have a live timer, but that does not work either. I know it is technically possible, because an app I downloaded does it perfectly. The app is called "Ascent: Screen Time Control". Is there some sort of extension I am missing, or entitlement I have not requested? Any help would be very appreciated.
1
0
65
1w
ShieldConfiguration: Shield does not update when token is moved from one store to anohter (while in foreground)
Hello, I have noticed that the ShieldConfiguration is only requested when opening a target app, and never when the application token is moved to a different shield while the target app remains in foreground. This causes problems because many times the wrong ShieldConfiguration is displayed (recycled) instead of requesting a new ShieldConfiguration. This bug has been around since the introduction of the Screen Time API in 2020 and is has not been addressed. Bug reports: FB14237883 FB17902392 Please fix asap!! Not acceptable to have bugs not being addressed for more than 5 years. Most concerning: This is still reproducing on iOS 26 beta 7!! Thanks a lot for your help.
0
0
124
1w
FinanceKit: Apple Savings transactions missing source account information
When fetching Apple Savings transactions via FinanceKit, the data is missing key context about where the deposit originated from. Here’s an example transaction I retrieved: Transaction( id: 77371A0C-7122-42C7-BEBC-85BDF654AD2B, accountID: 68D9FE9D-6DA6-4A27-BB9D-19209CD29A56, transactionAmount: 1.46 USD, creditDebitIndicator: .credit, transactionDescription: "Deposit", originalTransactionDescription: "", merchantCategoryCode: nil, merchantName: nil, transactionType: .deposit, status: .booked, transactionDate: 2025-08-20 13:44:26 +0000, postedDate: 2025-08-20 13:44:26 +0000 ) As shown: transactionDescription is just "Deposit" merchantName is nil No indication of the source account In contrast, the Wallet app clearly shows context for Apple Savings account deposits, such as: "Apple Card" (daily cash) "Bank of America" (external transfer) "Interest Paid" (we do see "Interest" come through correctly) Without this metadata, third-party apps cannot replicate Wallet’s clarity about where a deposit came from. Every deposit simply appears as "Deposit", which is ambiguous. Request: Please expose additional metadata for Apple Savings account transactions, for example: sourceAccountName (e.g. “Apple Card” or “Bank of America”) transactionOriginType (cashback, external bank transfer, interest) institutionIdentifier or similar for external banks This would allow developers to show clear, Wallet-quality transaction details and avoid confusing users. Impact: The lack of source info makes Savings deposits nearly indistinguishable from one another, even though Wallet provides this context. For apps leveraging FinanceKit, this results in a poorer experience compared to Apple’s own Wallet. Thanks!
0
0
67
2w
FinanceKit: Apple Cash transfers missing contact information
I’m testing FinanceKit with Apple Cash and noticed that transfers don’t include any counterparty information. Here’s an example transaction I fetched: Transaction( id: 5A96EA49-B7C9-4481-949D-88247210C1D7, accountID: 28D7C0E2-DC2A-4138-B105-BCE5EE00B705, transactionAmount: 30 USD, creditDebitIndicator: .credit, transactionDescription: "Transfer", originalTransactionDescription: "", merchantCategoryCode: nil, merchantName: nil, transactionType: .transfer, status: .booked, transactionDate: 2025-08-19 21:57:54 +0000, postedDate: 2025-08-19 21:57:55 +0000 ) As you can see: transactionDescription is just "Transfer" originalTransactionDescription is empty merchantName is nil No counterparty details are exposed In contrast, the Wallet app clearly shows the other person’s name and avatar for Apple Cash transfers, making it easy to understand who the payment was with. In FinanceKit, there’s no way to distinguish between transfers with different people — every transfer looks identical. Questions Is there a hidden or planned field for Apple Cash counterparty information? Can FinanceKit provide at least minimal metadata (e.g., contact name, initials, or a privacy-preserving identifier)? Is there any workaround today to correlate Apple Cash transfers with contacts? Feature request: Please expose counterparty information for Apple Cash transfers. Even something as simple as a stable identifier or name string would enable developers to build Wallet-quality transaction detail screens. Thanks!
0
0
63
2w