iOS 7 Simulator vs Real iPhone unexplained differences

Question

I am working on a fix for iOS 7 and having a problem. When I run my app on real device (iPhone 4S iOS 7), the screen looks different than when I run the same app on iPhone 3.5 inches iOS 7 Simulator. I am trying to understand why and what is the reason for that, if anyone can help it would be great!

First screenshot from Simulator, second picture from Device:

SOLVED: The app on the real iPhone has a base SDK 6.0 and the app that is on the Simulator has base SDK 7.0. So I guess the real device knew how to compensate for the low SDK base, unlike the simulator which behaved totally in a SDK 7.0 environment and thats why it was showing differently. thanks!

Answer 1

For anyone else reading this, Roy's 'Solved' comment above is correct.

I have gone into Xcode after the update and it had automatically updated my Base SDK to the latest 'iOS 7.0'.

After changing this back to 'iOS 6.1' - both the Simulator and Device are now working the same, as expected on iOS 7.

Not trying to steal Roy's thunder (whose saved me a good numbers of hours - thank you), just summarizing to others how to quickly fix the issue.

Ralph