Bought it one month ago for my friend.
Coming to mobile these are my opinions about it.
Display is crisp clear and bright.
As name suggests it's having amazing battery backup even with heavy usage.
Charging faster compared to regular charger.
The 8 MP camera takes decent shots but it could have been improved. I'm impressed with its front cam which takes good pictures
It supports VOLTE service so Jio sim works good in this device
It gets little warm but according to me there no major heating issues.
Only drawback of this device is that it doesn't produce good sound through earphones and low output sound.
At this price range this device's features are appreciable.
Overall a good device.