As I said in my title, I think its no use for those costomers who have a 4G set or they are going to buy a 4G set tomorrow.
But yes, Its would be profitable for me because I have 3G phones, so I connect with this one and Im injoing till 31 march,
Features are really nice, for exam.:-
2300 mAh battery gives you 6-7 hrs backup,
WPS connectivity, Sexy design, easy to use, has a 32 GB memory card slot where you save your data directly during internet downloads, you can also enjoy call facilty easily with Jio4Gvoice app.
BUT.
It supports only JIO sim now, you cant use another 4G SIM.
So, if you are not going to buy a 4G phone in next days, you can buy and enjoy JIO services for free 31 march, 2017.