I had taken BSNL dongle on trial basis and used it for a day. It was fine. After purchase it has no coverage. I bought this dongle few months back thinking this will give good help for me to use at home.
It will not work inside the house. Outdoor is ok. It is not at all 3G ready. It is really useless. Please do not spend money and time on this.
Hope it is useful information for the new buyer