You can add translations to published forms in different languages. If there is a translation available to the phone language it will be shown automatically.
Under the Forms tab, select the My Forms menu. Select Translations from the drop-down menu under the Edit button next to the form you want to add translation.
On the Translations screen, click the Add Translation button. Select the language you want to translate from the drop-down list.
On the form editing screen, delete the original text fields and add translation then save the translation.