ios - iPad app displaying iPhone screen size -

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i working on app , has 3 storyboards - ipad, iphone , iphone 4. 3 different users (myself included) have had experience on ipad - splash screen loads small , in top-left corner...leaving white space right , bottom.

it if loading iphone size splash.

i have no launch screen file selected in general tab of project. have noticed after restarting ipad, seem load proper screen size. ideas going on?

use line of code screen size.

cgrect screen_size = [[uiscreen mainscreen]bounds];

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