A multi-language user-interface (MUI) for use in a mobile electronic device accesses language-dependent information. The MUI system includes a display, an operating system, a localized data store, and an application. The MUI system is used in displaying information in a selected language on the mobile electronic device. The needed language-dependent information may be localized or include a portion that is localized. When the application needs to display localized language-dependent information (e.g., resource strings, settings stored in a registry, or file names), this information is obtained from the localized data store, which also contains language-dependent for all of the languages supported by the mobile electronic device.