Google introduced Hindi support for Google Allo over a year back and Google Assistant for JioPhone that was introduced last month had support for both English and Hindi. Now Google has silently introduced Hindi support for other smartphones as well in India. You can easily enable it by setting your language to English (India) on your Android smartphone. How to enable Hindi language support in Assistant Go to Languages & input (System -> Languages & input in Oreo devices) on your phone Go to Languages -> Add a language -> Add English (India) from the list and set it as primary language Press and Hold the home button to open Google Assistant Press the microphone to ask a question or perform actions in Hindi The question you ask are transcribed to English, and the reply you get is also in English, but final answer you get are read out in Hindi. Till now, Google understood Hindi, but the answer you get was in English or Hinglish. It doesn't work if you change the primary language to some other language. It currently works only for voice commands, and not for text input. We tried it on Android Nougat and Oreo devices, and it worked without any issues, ... 
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