This document lists different device and screen size specifications for iPhone, iPad, and Samsung Galaxy phones running iOS and Android respectively. It provides the screen resolution, orientation, and source URL for building responsive web pages across various mobile devices. In total, it specifies 8 different device configurations covering portrait and landscape modes. It concludes by thanking the reader for their attention.

1. CERTA meets Mobility

3. iPhone 3+4 | iOS | portrait 320 x 480 Quell: http://www.responsinator.com/

4. iPhone 3+4 | iOS | landscape 480 x 320 Quell: http://www.responsinator.com/

5. iPhone 5 | iOS | portrait 320 x 568 Quell: http://www.responsinator.com/

6. iPhone 5 | iOS | landscape 568 x 320 Quell: http://www.responsinator.com/

7. iPad | iOS | portrait 768 x 1024 Quell: http://www.responsinator.com/

8. iPad | iOS | landscape 1024 x 768 Quell: http://www.responsinator.com/

10. Samsung Galaxy | Android | portrait 380 by 685 Quell: http://www.responsinator.com/

11. Samsung Galaxy | Android | landscape 685 by 380 Quell: http://www.responsinator.com/

12. Vielen Dank für die Aufmerksamkeit