How to test old iPad app in Resizable iPad simulator?

Question

I would like to test our old iPad App in new Xcode6-beta6's Resizable iPad simulator i.e. with iPhone 6 1334 x 750 display or with iPhone 6 Plus 1920 x 1080 display sizes, but I am just not able to set the Height, Width textfields on the bottom. Keyborard comes up, but simulator always reset my values with defaults. What can be the reason?

Answer 1

You need to download the Xcode 6 GM version and you will get both iPhone 6 and iPhone 6 Plus option to the iOS Simulator:

Answer 2

Although the accepted answer is correct for the OP's question, you may wish to test other sizes. As far as I can tell, they must be less than or equal to the original dimensions provided.

This will still let you test all aspect ratios, which is (IMO) the point.