Duo Mobile leverages your existing language preferences at the OS level, so if you have set your device to Spanish or Japanese, you will now see your preferred language in the Duo Mobile interface beginning with version 3.48.0.
Spanish and Japanese join the previously supported languages of English, German, and French.
Note that if a device has multiple languages listed under its language / region settings, Duo Mobile will use the first language in that list that it supports.
General questions about language support in Duo’s product? Check out this Duo Knowledge Base article for more information.