Mukesh Ambani-owned Reliance Jio on Friday announced it has notched an unprecedented 72 million paid subscribers, and extended by 15 days its rock-bottom priced data offer under Prime membership.

The company, whose free extended promotional offer came to an end on Friday, also announced a complimentary offer for three months for those who paid Rs 303 prior to April 15, "considering the unprecedented demand".

"This extension will provide the necessary breathing room for users to avoid service disruption during the transition from free to paid services. Customers who could not enrol for JIO PRIME by March 31 for whatever reason can still do so by paying Rs 99 along with their first purchase of Jio's Rs 303 and other plans till April 15," the statement said. It also announced the Jio Summer Surprise for its JIO PRIME members.

"Your paid tariff plan will be applied only in July, after the expiry of the complimentary service," chairman Mukesh Ambani said in a letter to customers.

Jio had launched the inaugural free voice and data plan in September last year, and in December, extended the freebies till March 31, 2017.