In this paper, The authors will discuss the proceeding of this device and the necessary conditions in detail (see Chapter 4). Chapters 2 and 3 will obtain the background knowledge of the network standards GSM and UMTS, which we will need for compr

通过手机IMSI分析,得到手机号码前7位.(Through the mobile IMSI analysis, the first 7 bits of the phone number are obtained.)