According to my personal experience this jiofi device is very useful device I am using this device for three months I use internet in my laptop and mobile also the connectivity is very good and the battery backup is also very good. The battery works up to 5 to 6 hours after full charge everyone can use the 4g speed using this in the 3g phone also by wifi.
I provide good speed like 3-4 mbps and it is good and reliable the design is awesome and easy to carry in pocket also so I’ll recommen to all if they don’t have 4g phone.