Why does the iOS Status bar change size on some apps?

Question

Main question: This may be a simpleton question but I noticed on the lock screen the iOS status bar is bigger than the usual 20 points. Even when I turn location setting off and close all apps. the iOS lock screens status bar is bigger when compared to the iOS status bar when my iPhone is in an un-locked state. Why is that?

Second kinda related to the first question: also when I open grabTaxi found here the status bar is bigger than usual. Please download the app to see what I am talking about. you can't really tell by just looking at the screen shots.

Did the grab taxi developers decide to make their status bar bigger than the default?

Is it because grabTaxi is using some cross platform language, resulting in a bigger status bar?

Do apple make the status bar bigger on the lock screen simply because its easier to see?

Answer 1

I figured it out, apps that don't have a launch screen file, will have a bigger status bar. more detail here

How to enable native resolution for apps on iPhone 6 and 6 Plus?

Answer 2

My iPhone's status bar on lock screen is also bigger than normal, so I think Apple makes it bigger on lock screen for some reason.Maybe just because that it's easier to see.

For your another question, I downloaded GrabTaxi and used it. And maybe it's just because GrabTaxi doesn't adapt to 4.7-inch or 5.5-inch screen.

Answer 3

If an app is using your location and you lock the device, and if the app continues to use your location in the background, a large status bar is shown to remind you that the app is still using your location.