ESNs were allocated to new phones up until 2006, when unique ESN numbers effectively ran out. This number usually takes the form of an 11-digit decimal number or an 8-digit hexadecimal number.Īn ESN number is used to identify a CDMA phone in particular, which are phones that do not require the use of a SIM card to access the carrier network. Much like an IMEI, an ESN is a number unique to every mobile phone. The phone is then useless and, in turn, the lack of resale value makes for little incentive for thieves. This is done by the phone's owner, who calls his or her network provider to report the phone as lost or stolen. IMEI numbers are used world wide to combat the smartphone theft by "blacklisting" or blocking a stolen phone from accessing any cell network.
You can also trigger your IMEI to appear on your phone's display by entering *#06# on your phone's keypad. on the phone's backplate, or with other general information in your phone's settings menu. An IMEI is a 15 digit number that can be found on the phone itself, e.g. Think of an IMEI number like your phone's fingerprint- it is unique to your phone and can be traced to identify you as the owner.
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