【ios】Displaying on the app Store in More Than One Language

After you create an iTunes Connect record for your app, you can update the record with localized text and images to support additional store territories.

For example, if you created the iTunes Connect record for your app with the default language English, stores in all territories display information for the app in English. If you now upload metadata, keywords, and screenshots in French, users whose language
is set to French or who are located in a territory that includes French (and not English) as a supported language see the French metadata instead of the English metadata. Your app is also searchable in all French-language stores by the localized keywords.
In other store territories, the default language, in this case English, appears.

Note that the language set for users’ devices control which metadata is used when an app is presented in the store. If there’s no localized metadata available that matches the current language, the store shows the metadata for the default language. Note, too,
that the URL for the app is the same, regardless of the iOS or OS X language setting.

Important: The language information you provide here isn’t the same as the language information built into the app itself. The list of languages displayed
in the store under Languages is set in the app binary.To have localized information describe your app in the store, you need to provide it through iTunes Connect.

Adding New Languages

Important: You can add a new localization only when your app status allows editing, such as the “Prepare to Upload” status.

When you add a new language, all information except the description and keywords is prepopulated from the default language metadata, including any screenshots. You need to update the metadata with localized information for the new language. If you don’t upload
new screenshots, the previous (default language) versions are used.

To add store metadata for another language

Open the App Summary page for the app, as described in 

Click View Details to open the Version Details page for the app.

In the Metadata and Uploads section, open the Choose Another Language menu.

Find the new language in the Nonactivated Languages list, and click Add.

Enter the localized metadata for the language indicated.

The text fields and image requirements are described in “Metadata and Upload.”

Click Save.

Viewing Metadata for Supported Languages

From an app’s Version Details page, you can view the metadata and images entered for a specific language. Choose the language from the Activated Languages list in the Choose Another Language menu.

Editing Existing Languages

From an app’s Version Details page, you can edit localizations that you’ve already added. Find the language in the Choose Another Language menu, and click Edit.

If the language doesn’t appear in the Activated Languages list, there’s no metadata entered for the language.

Deleting Languages

If you’ve added localized metadata for your app but no longer want to manage it, you can delete it from the app version at any time. From an app’s Version Details page, you can delete support for a language. Select the language in the Choose Another Language
menu, then click Delete in the section heading.

Note: When you delete a supported language, the store territories that displayed app information in that language revert to the information you entered for the default language of your app.

Changing the Default Language

The default language is the language that the store uses to display information for an app when the app doesn’t have localized metadata for an store territory. If you find that your potential users are better served by a different default language, you can
change the default language for an app.

To change the default language, you add metadata for the new language and then switch which language is used by default.

To change the default language for an app

Add metadata for the language you want to be the new default language.

See 

From the App Summary page for the app, click the Edit button in App Information.

Select the new language from the Default Language menu.

Click Save.

Notes:

you can edit your Metadata any time you want. logon to itunesconnect-> manage application -> select your application-> click on view details. In app details page you have a "Metadata and Uploads" section. next to the section title there is an 

edit

 button,
it allow you to edit some details in metadata.
And also you can add metadata in different languages. For that first you have to choose your language from the drop down menu on the right hand side. here
it will list the languages that your app supports. this value is taking from your app's info.plist (means what are the languages you add in localisation). Select any language from the drop down and then press 

edit

 button.
Here you can add metadata for that language and it will displayed on the particular store