I have been to Kashipur, Dehradun and Hyderabad with this sim not including various places in transit. Got good signals everywhere. Even if it is not free, the free calling and high speed net is all what I need. Customer service is one thing which as of now I did not get the chance to encounter. Overall the best part is the pricing they have come up with. Thats the best part which I am concerned with. No roaming, everywhere calling free. Thats cool.!