No. Micromax Q4310 is not a waterproof mobile phone.
Yes, this phone does have root access but we do not recommend our customers to modify it as it voids the warranty.
Yes, you can use Jio sim card with this phone.
Yes, Micromax Canvas 2 is 4g mobile phone.
Micromax Canvas 2 is made of Metal and high quality Polycarbonate material. The front of the phone is covered with Corning Gorilla Glass 5.