Hii friends I am telling you my 6 years experience with Tata Indicom. This sim is only applicable for CDMA operators. Now this generation is using andriod phones, and this sim is not for andriod phones. This sim is only applicable for keypad phones, the phones which are currently used by old people. Also the signals are very poor of the Tata Indicom Mobile Operator. I think they should make some changes in their company so that they can reach on the top place of the mobile operator.