I m using idea sim card . Last year I was in rajasthan there idea sim card speed was very fast but nw I m assam and here idea sim rarely takes network. And net speed is also slow here. AND THE BIGGEST PROBLEM IS THT WE CANNOT CHANGE ROMING IN IDEA. my sim is rajasthan’s . And now I m in assam for 4 years. So romming is going . I called coustumare care for off roming plans and made my sim assam sim but thhey told me tht there is no plan for this.????????