iOS app crashing only on iPhone 5s

Question

I have a very strange issue. Please help out. My app is crashing only on the iPhone 5s. There are no issues with other models; on iPhone 5, 5c, iPod it is working fine.

The problem is when I click on the app icon, the splash screen is appearing and crashing. It is not showing the root view. I have added splash images in the proper size. My didFinishLaunchingWithOptions function is below. Please tell me whether I need to modify anything in build settings or build phases or info.plist. I am using Crashlytics for crash logs and there no crash logs coming but I am getting crash logs when it crashed in other devices inside the application.

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
     self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
     ViewController *rootController=[[ViewController alloc] initWithNibName:@"ViewController " bundle:nil];
    _navigationController=[[UINavigationController alloc] initWithRootViewController:rootController];

    self.window.rootviewcontroller = _navigationController;
    [self.window makeKeyAndVisible];
    return YES;
}

Answer 1

It would be difficult to find an issue without any crash logs or errors. I would like to check if the application really crashed or was it any exit(-1) statement which caused the application to exit. Some frameworks like CoreData inserts exit statements in the code. Try searching for exit(-1) in your code. You can also

1. Put NSLog in various methods of AppDelegate and see where it crashes.
2. You can use a try-catch block in main method.

@try{..} @catch(NSException *ex){NSLog(@"%@",ex.debugDescription);}

in your main method in main.m. This should help you in finding if there is any exception at all.

Answer 2

I know this is really old but today I was running into an issue with crashes on all devices and simulators older than iPhone 6 and it turned out to be some bug with Taplytics. I'm sure it's temporary but commenting out

Taplytics.startTaplyticsAPIKey("XXXXX")

in App Delegate fixed my issue