A computerized development platform for testing data representation for displays of different types of mobile communication devices, the development platform comprising: a plurality of device profiles, each device profile including a size of a display screen and a resolution of the display screen of one of the different types of mobile communication devices; and one or more processors configured to emulate display screens (41, 42, 43) of the different types of mobile communication devices, the emulated display screens (41, 42, 43) having different sizes and resolutions, as defined by the respective device profiles, to show representations of a plurality of the emulated display screens (41, 42, 43), characterized in that the one or more processors is further configured to show representations of the plurality of the emulated display screens (41, 42, 43) concurrently on a display of a developer, to retrieve input data from a data source, and to display the input data as content in the representations of the plurality of the emulated display screens (41, 42, 43) concurrently on the display of the developer, to receive for data elements of the input data a configuration parameter that indicates for a data element whether it is to be displayed as a mandatory data element on the display screens of all of the different types of mobile communication devices, to check whether a mandatory data element is indeed displayed concurrently in all of the representations of the emulated display screens (41, 42, 43), and to generate a warning signal in case that a mandatory data element is not displayed concurrently in all of the representations of the emulated display screens (41, 42, 43). a plurality of device profiles, each device profile including a size of a display screen and a resolution of the display screen of one of the different types of mobile communication devices; and one or more processors configured to emulate display screens (41, 42, 43) of the different types of mobile communication devices, the emulated display screens (41, 42, 43) having different sizes and resolutions, as defined by the respective device profiles, to show representations of a plurality of the emulated display screens (41, 42, 43), characterized in that the one or more processors is further configured to show representations of the plurality of the emulated display screens (41, 42, 43) concurrently on a display of a developer, to retrieve input data from a data source, and to display the input data as content in the representations of the plurality of the emulated display screens (41, 42, 43) concurrently on the display of the developer, to receive for data elements of the input data a configuration parameter that indicates for a data element whether it is to be displayed as a mandatory data element on the display screens of all of the different types of mobile communication devices, to check whether a mandatory data element is indeed displayed concurrently in all of the representations of the emulated display screens (41, 42, 43), and to generate a warning signal in case that a mandatory data element is not displayed concurrently in all of the representations of the emulated display screens (41, 42, 43). to emulate display screens (41, 42, 43) of the different types of mobile communication devices, the emulated display screens (41, 42, 43) having different sizes and resolutions, as defined by the respective device profiles, to show representations of a plurality of the emulated display screens (41, 42, 43), characterized in that the one or more processors is further configured to show representations of the plurality of the emulated display screens (41, 42, 43) concurrently on a display of a developer, to retrieve input data from a data source, and to display the input data as content in the representations of the plurality of the emulated display screens (41, 42, 43) concurrently on the display of the developer, to receive for data elements of the input data a configuration parameter that indicates for a data element whether it is to be displayed as a mandatory data element on the display screens of all of the different types of mobile communication devices, to check whether a mandatory data element is indeed displayed concurrently in all of the representations of the emulated display screens (41, 42, 43), and to generate a warning signal in case that a mandatory data element is not displayed concurrently in all of the representations of the emulated display screens (41, 42, 43).