The Google Assistant version for Jio Phone will be available in English and Hindi, and respond to voice search queries. "For them, Android Oreo (Go edition) will help improve the experience on entry-level phones while new apps like Files Go will ensure their experience is smooth and they consume less data", he said. Google says that the feature will arrive in more countries in the coming months.
Tez has almost 12 million active users, the company said.
At the event, Sengupta said Google had some big plans for the Tez app for 2018 and that some big features for merchants were in the pipeline.
"Google for India" is an annual event which is being held for the third consecutive year. By making Assistant available on feature phones, Google can reach a huge pool of new users and bring them online, in line with its Next Billion Users strategy.
Google Go is light on storage and data and works efficiently on patchy connections.
Google also unveiled special navigation apps tailored for two wheelers - people who can not keep checking the phone's display as they ride.
In addition to UPI, the new Tez will come with support for Bharat Bill Payment, which allows you to view, subscribe to and pay bills from electricity companies, phone companies, schools and lakhs of other firms in India.
The company announced "Files Go", a new app that helps free up space, find files faster and share files offline with people nearby. The feature is now introduced for India only, as there are a maximum number of Bike users in the country.
According to Google, India crossed the 400 million internet user mark this year.
Two-wheeler mode or "Motorcycle Mode" in Google Maps has has been incorporated to help bikers in the country find the route most suitable route that use "shortcuts" not accessible to cars and trucks.
In a demo shown at the Google for India event, where Google Assistant for Jio Phone was announced, Google showed that its software will be able to deliver search results, play music and send text message, all using voice commands. After its announcement and launch in May 2016, this is the first time that the tool comes to a feature phone.