"Respecting your right to expression, socializing and information, we have made Twitter free on our network for 3 months", said Ncell in a private message (DM) that was sent to a few Twitter power users.
Similar to Wikipedia zero, now Ncell customers will be able to access the Twitter, free of mobile data charges for three months using mobile.twitter.com or official Twitter app for mobile (Android/iOS etc). But this offer is not available on Opera mini and other thrid party apps and browsers.
Later, Ncell confirmed via a tweet.
@aakarpost Yes, it is free for 3 months.//AshmitaGood job Ncell! Make Twitter free forever. A few weeks back Ncell has introduced Wikipedia Zero - where Ncell customers are able to access the Wikipedia, free of mobile data charges.
— Ncell (@Ncell) May 26, 2014