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    <p>Your assumption is correct, the watchdog killed the app. This is because the app doesn't start up properly and either the main thread is blocked or no user interaction is possible since no UI is loaded.</p> <p>As I understand your description, you are creating the resources while loading? And probably doing this on the main thread? You should try to offload resource hungry code into a background thread instead of doing this on the main thread where older/slower devices could take much longer than expected. The UI should always be responsive, the main thread should never ever to tasks that could get anywhere close to one second of processing.</p> <p>Another reason could be that the link between the storyboard and the view controller is broken and it actually never loads on that device type.</p> <p>But without more details it is impossible to say what exactly is going on.</p> <p>In general: If the app is killed by the iOS system, e.g. by the watchdog due to startup time exceeding or due to allocating too much memory, then only iOS can generate a crash report.</p> <p>The problem is that the app gets killed and in that case the process is killed. And that cannot be detected by any code running inside that process. And since crash reports on iOS, other than the iOS system based crash reporter, do run inside the same app process that is being killed, they cannot report or write any crash report.</p> <p>The following page gives some more details on this: <a href="http://support.hockeyapp.net/kb/how-tos-faq/which-types-of-crashes-can-be-collected-on-ios-and-os-x" rel="noreferrer">http://support.hockeyapp.net/kb/how-tos-faq/which-types-of-crashes-can-be-collected-on-ios-and-os-x</a> (Though with context to PLCrashReporter, which is not used by Testflight. But the general statements are identical)</p>
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    1. COThanks, that makes sense with TestFlight's inability to send data when the process is killed. The app draws some simple shapes using Core Graphics and UIKit at launch. I'll focus my efforts there. I'll update the question to indicate the device in question is an iPhone 5.
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      1. USMichael Mangold
    2. COiPhone 5 should be the fastest out there. So I would recommend asking the user if he can provide the crash report from the actual device that iOS generates. Either by syncing the device to the Mac/PC or by copy pasting it from the diagnostics settings part. There are lots of descriptions out there on how to do that. Then you would see the actual real reason for the kill.
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    3. COThanks for that. The user doesn't have a machine to sync with but I'll have him paste the crash report into an email. I didn't know that was possible. Much appreciated.
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