1. A method for enabling an application program configured for use with a display device having a lower pixel density to utilize a display device having a higher pixel density, the method comprising: receiving from an application program a call directed toward an application programming interface for performing a screen input or output function, the call including one or more parameters; in response to receiving the call, determining whether the application program is configured for use with the display device having the lower pixel density or the display device having a higher pixel density; and in response to determining that the application program is configured for use with the display device having the lower pixel density, scaling the parameters for the higher pixel density display device and calling the application programming interface with the scaled parameters.