I have been using this since August 2016.I am sharing my experience how it was irritating data card.
Since I had purchased it, it would have never increased its speed beyond 136kb/s even in 3g data pack.Also it gets hanged while working and then it goes on not working.Again on installation, it does not support operating system and intstallation crashes meanwhile.
It is only show- piece data card.Airtel connection is much slow this data card.Also on unlocking it, it goes crashing with other operators’ sim card.
It is not possible to work with such dongle for long time because it creates headache only and nothing else.I am gonna change it soon.I suggest everybody that just avoid such worthless product for ever.