It is not a bad deal as Jio is offering humongous mobile data for free, along with voice and SMS under its Jio preview offer for 3 months.Also, if you do some simple math’s, spending around Rs 5000 ( basic LYF phone cost) for 90 days of unlimited data and HD voice at good speed might not be all that bad a deal. In order to get Jio Sim you have to register on their website and request an invite. Jio team will then send an invite with referral code if your location falls under their strong network coverage.