Jio is offering 1GB data per day at ₹10, along with free additional 5GB.  After Jio, Airtel brings 28GB data per month at ₹345, 500MB during daytime and 500MB during night hours. Vodafone also offers  unlimited calls/SMS along with 1GB 4G data/day at ₹346/month. 

Existing and new customers can enrol for the Prime membership by 31 March 2017. Jio Prime requires one-time fee of ₹99 and then on you are entitled to continue using the benefits of the Happy New Year Plan for a rate of ₹303 per month, which comes to roughly Rs 10 per day. That includes unlimited calls, SMS and 28GB data/month. In addition, you can enjoy free 5GB data, which means if you exhaust the limit of 1GB data/day, the speeds won't be lowered.

 

Airtel's ₹345 plan brings 1GB of 4G data to users per day, with 500MB available to use during day time and 500MB during night. It also offers free local and STD voice calls. All those who opt for this plan, which is available only until the end of the month just like Jio, can use the same offer for the next 11 months.

 

Vodafone has a similar crafted at ₹346, 1GB of data daily. However, it offers double data about 56GB and double validity of 56 days for the first month as a user activates the pack.  The offer is valid up to 15 March. 

 

Here's a quick look:

 Price/monthDataVoice calls and SMSFUPValidity
 Airtel₹345 28GB  Unlimited 1GB/day (500MB daytime, 500MB night hours)  28 days
Jio₹303 28GB + 5GBUnlimited 1GB/day 28 days
Vodafone₹346 56GBfirst month/28GBUnlimited 1GB/day56 days/ 28 days

 

Vodafone and Airtel don't require you to pay any one-time charge. And, if you look at the tariffs offered by all, Vodafone definitely has and edge with the lucrative first month offer.