Localization on mobile devices Native mobile apps are localize in four languages: Spanish, French, German, and Japanese. Right to left languages are not supported in the native mobile app. The native mobile applications are localized in two different ways, which means that there is a blending of localization visible inside of the native applications. Native (on device) localization: Controlled by the device's language preference, which means that many components are localized with the language preference for the user's device. These components can include button titles, screen titles, and local error messages. The on-device localization supports Spanish, German, French, and Japanese. These translations can't be customized since they are shipped with the application binary and translated natively on the device according to the device's language settings. Server-side localization: Controlled the same was as desktop web localization (server system language / user preference on server). Components that are localized on the server include things like field labels, web content, and other data that is stored on the server in a translated field.You can customize translations that use server-side localization the same way you do on the desktop. For more information on configuring server-side localization, see System localization.