Hello frnds my name is shakeeb arsalan.and today I am sharing my views about jiofi.jiofi is very good hotspot because I use this there battry is very long lasting.and there is also internet surfing is very fast.this is invented mukeash ambani and this jiofi only take jio sim fard.another sim card no supported in this device.this device is very useful for us because today all people want to browse internet and surfing internet.this device range is no so long its connect when device is near by me means 10 meter to 20 meter.and now I go some more meter then this is disconnect or speed is low.this is no so heavy device.only 200 gram aprox.and its charging time is only 2 to 3 hours its may take time.thank u all of u.