I would like to know which device support 4G reliance jio sim....please reply.

Almost all new phone launched recently support RJIO service. Old phones with 4G support now also support 4G VoLTE as its merely a software feature if you already have 4G capability in your device.

If you are buying a new phone or device then check whether it support following 4G bands or not :

Band 5 (850 MHz)
Band 3 (1800 MHz)
Band 40 (2300MHz)


If it does then it RJIO ready device. Further you can see this list :
http://etalkindia.com/talk/showthrea...ed-smartphones

That list is not complete as its almost impossible to keep track of all 4G enabled handset in India.

Why don't you tell us which phone you want to buy, then may be can suggest you best .