Black screen after the home page in ios

I am having a login page in my ios app.

After i successfully logged in, i want to show a home page.

But as of now i am getting a black screen in my iphone. (6s).

The android app is working perfectly though.

How can i resolve this issue.
Any help will be great.
Thank you

@kevred
put this in app.module.ts

IonicModule.forRoot(MyApp, {
preloadModules: true
}),

You could check whether there is a bug with the app. And then try to uninstall and install the app on your iPhone again. If the app keeps crashing on your iPhone, you can check whether there is a problem with your iOS system. Then try to repair your iOS system with TUnesKit and run the app on your iPhone again.