The IMEI number is used by the GSM network to identify valid devices and therefore can be used to stop a stolen phone from accessing the network. For example, if a mobile phone is stolen, the owner can call his or her network provider and instruct them to "bar" the phone using its IMEI number. This renders the phone useless, regardless of whether the phone's SIM is changed.
IP卡
狗仔卡
发表于 2006-2-3 03:40:20
显身卡
发表于 2006-2-22 13:46:04