I have a jiofi2 device and when I use it for more than 2 hours it gets heating too much and some times am not even getting connected only. although reliance jio says its running under 4g I am only getting it up to maximum 3g speeds. I have issues with its portforwarding too. I tried to forward a port to run my dvr but unfortunatily its getting disconnected most often. if you are buying this for these kinds of purposes then I must say its not an outstanding product for you. I appreciate the free offers and everything that jio provides. but still the device quality is not up to the mark. most of my friends are having the same issues.