Intex would be launching its two smartphone models, embedded with 'nanu' software in July, Gentay Communications Pte Ltd, said in a statement.
    
The free-call nanu, which subsidizes cost through targeted advertising on ring tones of dialers is designed to operate in 2G areas, opening up to a market of millions of rural folks, said Martin Nygate, CEO of Gentay Communications, the parent company of 'nanu'.
    
He said nanu was already downloaded by 1.5 million subscribers in India, out of the 2.2 million subscribers globally.
    
"India is our biggest market and as such we have teamed up with Intex to launch it through two new smartphones which will be on the market in July," Nygate said.
    
Unlike conventional voice calling apps, nanu provides its all call for free, including calls to non-nanu users on landlines and mobiles anywhere in the world.