The company said that Mini is the third largest mobile app used in India after Facebook and WhatsApp.

"In India, the number of Opera's smartphone users grew by 110 percent over the past year and now account for 50 percent of Opera's total user base. These users are spread across Opera's portfolio of browsers, including Opera Mini and Opera's high-end smartphone browsers - Opera Coast for iOS devices and Opera for Android," Opera said in a press statement.

"The Internet has the power to transform lives and we want everyone to have access to it. That's why our browsers are designed to work on almost any Internet-enabled device and in the toughest network conditions. Opera Mini's famous compression technology, which makes browsing faster and helps users cut down on their data costs, is extremely relevant for India. It feels fantastic to be embraced by so many Indians and I'm confident that India will play a key role in Opera's global vision of bringing the next billion people online," Lars Boilesen, CEO of Opera Software said.

Microsoft is likely to launch smartphones with Opera Mini as default browser from early next year, an official of the browser firm said.

The IT giant, which bought phone maker Nokia, entered into an agreement with Oslo-based Opera Software a couple of months ago.

"They have product roadmap but from early next year you will see these devices in the market with our browser," said Sunil Kamath, Vice-President for South Asia, Opera Software.

He told reporters here that the devices would be first launched in India, which is their biggest and fastest market.

"India is the largest and fastest market in terms of Opera Mini users. I don't think there is any mobile browser closer to us," he said.

Sunil said globally the browser firm has over a billion users, including 350 million users of Opera browser. Opera has tie-up with 16 phone makers in India, whose devices have Opera Mini as the default browser.

Opera Software had also released its latest Opera Mini statistics, which indicate a massive migration of its basic Java phone users to Android phones.