On December 1, three of the country’s biggest telecom operators, Vodafone Idea, Bharti Airtel & Reliance Jio announced a hike in their tariffs. This comes just weeks after Vodafone Idea & Bharti Airtel posted historic losses on account of provisioning for the adjusted gross revenue dues. It will be up by over 40 percent from December 3. Meanwhile, Bharti Airtel announced new plans under which call and data charges will be dearer for its pre-paid customers by up to 42 percent from 3 December. Jio on Sunday said it will launch new unlimited plans from 6 December, which will raise its voice and data tariff by up to 40 percent.