Explore the intersection of business and app development. Discuss topics like device management, education, and resources for aspiring app developers.

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Enterprise App Crashes on iPad Pro (4th Gen, 11") When Installed via Web
Hi, I’m an enterprise developer, and we distribute our internal iOS app through a direct download link on our company website (not via App Store or TestFlight). The app is properly signed and works fine on most devices including iPhones and regular iPads. However, on iPad Pro 11-inch (4th generation), the app crashes immediately upon launch when installed via the website. Interestingly, if we install the exact same app via Xcode, it runs without issue on the same device. We also tested a third-party enterprise app called "Taipei On", and it showed the same crash behavior when installed via direct web download on the same iPad model. This leads us to believe the issue may be more widespread or specific to this iPad Pro model or recent iOS versions. Furthermore, some of our users with iPhone 15 devices have started experiencing similar crashes recently, even though they had no issues before. Is this a known issue related to enterprise app distribution or IPA installation behavior on certain devices? Any advice or insight from the Apple team or other developers would be appreciated. Thanks!
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137
May ’25
After the Provisioning Profile expires, application cannot be used after reinstallation
My company signed the application with enterprise certificate, the Provisioning Profile expired on March 20, 2025. Some iPhones didn't update the application before the expiration. We have update the Provisioning Profile and repackaged application. However, these iPhones still can't use the application after reinstalling the new ipa. After opening the application, the screen is blank and then flashes back without any error prompt. Restarting iPhone didn't help.
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97
Apr ’25
RCS firewall domains & ports
Hi everyone, I’m working as an IT engineer in the cruise industry and need to troubleshoot passenger complaints about Apple’s new RCS messaging feature (introduced with iOS 18). Could someone help confirm which domains and ports iPhones use when they send RCS messages? My firewall team wants specifics: domains (or subdomains) that need whitelisting and the ports involved. Any official or community-sourced info would be super helpful—thanks in advance!
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146
Aug ’25
IOS 18.3 does not accept the trusted CA's certificate after changed the website cert
Hello, wehave some Iphone in the family and noticed a strange issue: On a website the site admins renewed the webserver cert, and now most of the IOS devices( Iphone 15 / 15 Pro Max / Ipad 10) doesnot trust in the new cert, while the apple trustsin the rootCA webste: https://etitan.hu RootCA CN = NetLock Arany (Class Gold) Főtanúsítvány ios 18 trusted CAs:https://support.apple.com/en-us/121672 So any idea whats wrong ? On windows everything is OK !
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687
Feb ’25
allowCamera on Unsupervised devices
Is there any mechanism to restrict camera usage on a user-owned device, once they have opted in, consented to the restriction, and installed a management profile? Documentation suggests it was possible with allowCamera, but has be deprecated on unsupervised devices. Am I understanding correctly that it's simply not possible anymore unless the device is supervised?
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253
May ’25
Content-filter overwritten by a third-party content-filter
I have an MDM supervised device with an installed managed app, that activates a content-filter solution to filter traffic system-wide. Is it possible in any way for the user to install a third party content-filter app that would somehow overtake the control of content filtering from my app? I'm asking this because I've tested such a case with my another test content-filter solution and it takes control over content filtering from my content-filter – I think this is possible only because my device is in developer mode, but I'm not entirely sure, and I need a confirmation that it would not be possible to happen in an end used environment.
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546
Jan ’25
No such module 'DeviceManagement'
I'm working on the companion iOS app for my purpose-built MDM system. when I use the following in a .swift file: import DeviceManagement I get the build issue: No such module 'DeviceManagement' When I attempt to add the framework in the Frameworks, Libraries, and Embedded Content settings, DeviceManagement doesn't even show up in the available frameworks. Alll the documentation I can find suggests that is the correct framework to import, but I'm new to this and not sure if I'm just missing something. Some AI help is suggesting that the culprit might be v16.x of Xcode, but I don't know enough to prove that correct or not. Any ideas on why Xcode believes there is no such module? Is there documentation that might help me learn how to make that framework available for my project?
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207
Jun ’25
Error install in-house App on iPhone 16e
We are going to replace our iPhone SE to iPhone 16e. The issue is that we are unable to install an in-house app on the new iPhone 16e. The app works on the iPhone SE Both phones run on the same iOS version (18.5) Has anyone else experienced the same issue? I initially thought the iPhone 16e was the successor to the iPhone SE
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100
Jun ’25
app to restriction student phone use in schools
I work at a school in NYC and have a software idea that could better support the new NYC phone ban law than current market options (i.e. Yondr pouches). Right now at my school, students and staff scan a QR code upon entering the building to indicate that they are in the building. They scan again on the way out to indicate they've left the building. This is super helpful for attendance, particularly in emergency situations (fire drills, etc). Imagine if when students scanned their QR code, it also activated an app similar to Opal or ScreenZen, but with an admin preset whitelisted apps. The idea is that this app would default deny access to all apps on students' phones except the admin preset whitelisted ones such as Phone, Calculator, etc. Depending on the age/needs of the student, other apps like Spotify, or medical apps could also be whitelisted. My question is -- is this idea possible to create? We would need admin preset controls to create the preset whitelist. We can't have students picking their own restrictions, as we know most would opt to not restrict at all. We would need an admin dashboard so teachers/admin can see which students have activated the app in the building, and which may be trying to sneakily avoid it. We would ideally need to be able to whitelist both system apps like Phone and Calculator, as well as non-system apps such as Spotify (and medical apps -- we have some students who manage/monitor their Diabetes with an app). I don't have a background in software. I'm a math and health teacher. I've experimented with trying to have friends who majored in CS to create this app for me, but they've all either struggled/lost interest. So I'm also looking for a business partner in this venture. If anyone has any guidance here, it would be so helpful! My boss (Head of School) is super interested in this idea and significantly prefers it to every other alternative that he has encountered. The problem is this idea does not exist yet! Note: I know this is a super similar idea to the app and product "Brick". Notably, though, Brick does not have the ability for admin preset controls, or the admin dashboard. We reached out to the company to see if they're create this for us and they said it's a back burner idea that they're aware of, but it's not a priority for them right now. Thank you for any guidance!
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614
Oct ’25
Enterprise App Installation Fails on iOS 18.5 with Integrity Error
I am a developer distributing an enterprise app. Recently, some users have intermittently encountered an error message on iOS 18.5 stating: "Unable to install this app because its integrity could not be verified." While the issue could not be reproduced on iPhone 15 / iOS 18.5, we have received reports that it does occur on the following devices: iPhone 14 / iOS 18.5, iPhone 14 Pro / iOS 18.5, iPhone 14 Plus / iOS 18.5, iPhone 16 Pro Max / iOS 18.5, Are there any known issues or recommended solutions regarding this behavior? Thank you in advance for your assistance.
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172
Jun ’25
app crashes, but it works normally when another app is installed through MDM.
We install two in-house apps. The first app is installed using the standard in-house method, while the second app is installed via MDM commands. Both apps share the same Team ID and use Keychain sharing to exchange data. However, when the MDM profile is deleted and the second app is removed, the first app intermittently encounters issues and does not function properly. However, when the MDM mobileconfig is reinstalled and the second app is installed again, the first app that was not functioning starts working properly. We have thoroughly reviewed the logs but have not been able to find a solution. Your assistance would be greatly appreciated. We have extracted and attached the device logs that were generated during the error occurrence. log.log
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195
Jun ’25
How to test ManagedAppConfigurationProvider without MDM
How to test ManagedAppConfigurationProvider without MDM ? Task { /* Configuration provider task */ for await configuration in configurationProvider.configurations(MyAppConfiguration.self) { self.configuration = configuration ?? MyAppConfiguration.defaultConfiguration } } Can the existence of a configuration be simulated, e.g. by storing a mocked configuration in UserDefaults? The UserDefaults key "com.apple.configuration.managed" seems not relevant here.
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81
Jun ’25
In the RequestRequiresNetworkTether property, the definition of “network-tethered” is unclear and there is a discrepancy between the actual behavior and the description in the document.
In the RequestRequiresNetworkTether property, the definition of “network-tethered” is unclear, and there seems to be a discrepancy between the actual behavior and the description in the documentation. We would like to clarify the definition of the connection state that “network-tethered” means and the specific behavior requirements when the property is set to true. Explanation of the document The description “If true, the device must be network-tethered to run the command. I was not sure whether it refers to “network connection” or “tethered communication” as the Japanese translation. Actual operation verification results The error message was “The device is not tethered. (MDMErrorDomain:12081)”. Error occurs when only carrier communication is used The following connection conditions work normally (as in the case of false) Wifi communication Combination of carrier communication and Wifi communication Tethering communication Combination of carrier communication and tethering communication Tethering connection (both parent and child devices) Inconsistencies Although the document description could be interpreted as a simple network connection requirement, actual operation is limited only to carrier communications alone Error message uses language regarding tethering, but actual tethering connection works fine
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123
Mar ’25
CNContact instantMessage field duplicates after serializaiton/deserialization
Hello folks, I stumbled upon a weird CNContact serialization problem. I use the Contacts framework to update the AIM field, which is one of the instantMessageAddresses within a single Contact. Here is the simplified code I used: func updateAIMFieldOn(contact: CNContact, aimValue: String) { do { guard let mutableContact = contact.mutableCopy() as? CNMutableContact else { logger.error("[CM] Couldn't update contact with aim \(aimValue)") return } var updatedAddresses = mutableContact.instantMessageAddresses updatedAddresses.append(CNLabeledValue(label: "", value: CNInstantMessageAddress(username: aimValue, service: CNInstantMessageServiceAIM))) mutableContact.instantMessageAddresses = updatedAddresses let saveRequest = CNSaveRequest() saveRequest.update(mutableContact) try CNContactStore().execute(saveRequest) logger.verbose("Contact's AIM updated successfully!") } catch { logger.error("Couldn't update contact") } } And after serializing the contact to data, and then deserializing, the contact got two AIM fields with the same value: X-AIM;type=pref:some:part:of_my_aim_value IMPP;X-SERVICE-TYPE=AIM;type=pref:some:part:of_my_aim_value Why does it work in this manner? Is it possible that ":" char causes that? Format of my aim username is {some:part:of_my_aim_value}. I didn't find any information in the docs. Thanks!
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723
Jun ’25