Multilingual Sites in SharePoint 2013
In SharePoint 2013, the language selection (MUI) is a bit different than in 2010.
Your default language settings in your browser of choice will be used by default (same as 2010 btw). So if you have IE set to English as preferred languages, SharePoint will show you the UI in English once you enable it as alternate language.
Now, the big difference is that the dropdown menu for site language selection is gone. Instead, in you MySite, if you go under “About me”, you see a few option in the navbar, click on the “…” to reveal a “Language preferences” menu. From there you can define the language selection associated with your profile on that server.
