ios - App uploaded to Itunes Connect for testflight testing doesn't show correct screen size when downloaded -

got little problem, i'm not sure if there's missed when uploaded application testflight testing. what's happening when download application testflight(i'm using iphone6). screen size of application doesn't fit of iphone 6 size. looks renders iphone 5 screen. i'm using size classes. when run application directly xcode device screen rendered correctly.

need guys.

thanks