Reliance Industries Chairman Mukesh Ambani yesterday announced free voice calling, zero roaming charges and cheaper data tariffs for Jio customers. Ambani also announced a ‘free welcome offer’ for Jio customers from September 5 till December 31.

R-Jio will offer users data services free for four months, after which it will offer 10 tariff plans starting at R19 a day for occasional users. For low data users, tariff will be at Rs 149 a month and Rs 4,999 a month for heavy data users. “If you use more data, it will go down to Rs 25 per GB,” said Ambani.