How to track issues of view rendering?

I have developed an Ionic 3 app for iOS & Android. Working fine. But sometimes some users reported about blank list, not clickable buttons etc. (Mostly in iPhone). One example: data is coming from server. List was created & scrollable, but no view is rendered at all in items. In same device working fine at my end.

Is there a tool or anything which can track view rendering issue? Or is there a way to know if view is loaded properly or not?


That is quite difficult to catch as there (probably) is no real error happening that could be caught by anything. In general, you can try to make your code to be more resilient and check for valid data etc more.