New Delhi, Oct. 10 -- Shares of Bharti Airtel Ltd and Vodafone Idea Ltd surged on Thursday after most profitable telecom operator Reliance Jio said it will end free voice calls on its network.

Bharti Airtel Ltd soared 4%, while Vodafone Idea gained 18%. Reliance Industries Ltd rose 2.5%. In last three sessions, Bharti Airtel gained 10% while Vodafone Idea advanced 30%.

Reliance Jio said late Wednesday it will start charging for calls made to rival networks at 6 paise a minute. This comes as a major relief for rivals Bharti Airtel and Vodafone Idea which have been left bleeding financially as a result of the rock-bottom tariffs offered by the Mukesh Ambani-controlled company.

Analysts believe Jio's tariff hike is prima facie positive fo...