Autolayout margins between buttons are incorrect only on 4" screen

Autolayout margins between buttons are incorrect only on 4" screen

References

Reference NO 1

http://stackoverflow.com/questions/15191266/autolayout-margins-between-buttons-are-incorrect-only-on-4-screen

Reference NO 2

http://stackoverflow.com/questions/17647227/how-to-set-different-ui-for-different-screens

Reference NO 3

http://www.raywenderlich.com/20897/beginning-auto-layout-part-2-of-2

Reference NO 4

http://www.raywenderlich.com/33150/how-to-update-your-apps-for-the-4-inch-iphone-5-display

Reference NO 5

http://www.techotopia.com/index.php/Working_with_iOS_6_Auto_Layout_Constraints_in_Interface_Builder

Reference NO 6

http://weblog.invasivecode.com/post/42362079291

Reference NO 7

http://isboxer.com/wiki/FAQ

Reference NO 8

#EANF#