A computer screen displays a user interface for a mobile phone testing service, featuring a yellow header with "G&R Stadthausstellung" and a blue header with "T-Mobile Motiv" and "Sms." The screen is divided into sections for "Preisssturz zu Testsieger" and "Jetzt nur 9 Cent*" with options for "Button enabled/deabler" and "Test Handelt" and "Test Phone" with options for "Test Handelt" and "Test Phone" and "Test Phone" with "Test Handelt" and "Test Phone" and "Test Phone" with "Test Handelt" and "Test Phone." The screen also includes a "Stadt Kol" button and a "Community" button.