Xcode 6.2 - how to set correct scene size?

Question

Apple Xcode

After creating a single view application, the size of the workspace
looks very strange, so
how can I make the scene 1 in 1 like the iPhone? I tried like this but then for some reason it turns out cropping

Answer 1

At the bottom there are rectangles - by clicking on them, we can choose the screen size: by 6.5 for everything! It highlights the area that you need!