The BBC:

The recommendations explicitly forbid operators from throttling data speeds for any online service, and mandates all content be treated the same.

Additionally:

Telecom operator Airtel was forced to withdraw a plan to charge extra for internet calls, and shut down a platform called Airtel Zero, which allowed customers to access a few mobile applications for free. […] Others, including Facebook and Google, were also forced to abandon their zero-rating platforms and deals. The most visible casualty was Facebook’s Free Basics service, which offered Indians free access to a limited number of websites.