The JioFi is a device by Relaince JIO pvt. Ltd. made in China, which lets you connect to the internet through using your phone’s of desktop’s Wifi. It is easily available for Rs 999 only in the market. I have been using this device since 6 months now and I want to share my experience with this device. It provides good network and internet speed. but the main thing is that the battery backup is very low. When I bought it, it used to give me about 7 hrs backup but now, after about 6 months, it is providing me for only about 3 hrs of backup. The battery quality provided is very poor. Also, the device heats up when transmitting huge data, such as downloading a huge file or streaming online videos in HD. Also you cannot use other network’s SIM card except Reliance Jio, unlike other dongles which allows users to use any SIM card in it. I would not recommend anyone to go with this device, rather buy a 4G compatible device for your use.