Reliance Jio Extended till April 15 as per Summer Surprise Offer. You can call this surprise extension as April fool prank. 
The last date for Jio Prime subscription plan has been extended, a welcome reprieve for Reliance Jio customers who were unable to sign up for the service on the last day due to system errors. With the new Jio Prime last date, customers get 15 more days to join the plan over the original deadline of March 31.
Reliance Jio announced the Jio Summer Surprise offer. As per details, This is essentially an extension of the Happy New Year Offer for another three months, where users get unlimited mobile data, with a 1GB daily data FUP for free, 100 SMSs per day, as well as free access to the Jio suite of apps, such as Jio Cinema and Jio Music. Voice calls will remain free for all Reliance Jio subscribers, whether enrolled in the Jio Prime membership or not. However, unlike the Jio Happy New Year Offer, the Jio Summer Surprise offer is only applicable to Jio Prime members who purchase the Rs. 303 (or higher) prepaid recharge or enroll in the Rs. 303 (or higher) postpaid plan.
For the 3-month period of the Jio Summer Surprise Offer, you get benefits of the Rs. 303 recharge. Such that, 1GB daily data FUP for the Rs. 303 recharge, and 2GB daily data FUP for the Rs. 499 recharge, and so forth.
Enjoy the Extended period of Free Jio Subscription!