I have purchased jiofi last month and using ot continously. It is far better than any 4g dongle. It does not any extra device to use just switch on and it will start working.I am using it in my shop to fill applications for students and other customers. It is so fast as compare to dangle. Videos in youtube can be seen without buffering.Now jiofi has become my money making device. It can be taken to every where for use . Battery back up is very nice and when network is good then it shows green sticks.it is far better than dongle because if you going to purchase plug and play dongle you have invest atleast 1500.It is little costlier but the best.