IMEI (International Mobile Equipment Identity) is the International Mobile Equipment Identity code for International Mobile Equipment identification number, is by the 15th of digits "electronic string number", it and per handset one-to-one, and this code is the world's only. Each a mobile phone after completion of the assembly will be given a global only a group of number, this number from manufacturing to consign use will be manufactured by the makers records.
introduction
International mobile equipment identifiers (IMEI: InternationalMobileEquipmentIdentificationNumber) is difference of mobile devices logo, stored in mobile devices, can be used to monitor theft or invalid mobile device. IMEI composition as shown below, mobile terminal equipment by typing "* # 06 #" can check. Its chief for 15, each digital using only 0 ~ 9 number. One TAC representative assembly code, by the European model type standard center distribution; FAC representative assembly factory number, For product serial number, used for SNR difference between the same TAC and FAC per mobile equipment, SP is spare coding.
IMEI commonly known as "string maru" stored in mobile phone EEPROM (known as yards pieces), familiar with and understand this number for our future identifies a mobile phone will make a very big effect. First TAC yards before three in different times can produce change, the past TAC yards before three in now on their mobile phones does not arise. The past some old model phones are basically 446/448 beginning, such as moto v328 nokia, and even though the same phone 711bn in different period will have different TAC code like everybody owns the most familiar 8210 upgrade, if the three 448902 cannot upgrade is different, because the CPU. Therefore the past say as long as is the same type of cell phone TAC code must be the same argument is not very accurate, like again Ericsson mobile phone of the same model T39MC in different regions of the place also will have different number: mainland HangHuo for 520406, Hong Kong is 520407. We know that these differences after can pass TAC yards "device recognition", and don't bother to remember the IMEI 7.8 digit represents the origin.
IMEI distribution
IMEI yards by GSM (global mobile communication association) unified distribution, authorized BABT (British authentication management committee) communication by IMEI judge.
IMEI composition
IMEI by 15 digital composition, the composition for:
1, before 6 digits (TAC) is "type approval number", general representative models.
2, then two-digit (FAC) is the "final assembly number", general representative origin.
3, after 6 digits (SNR) is "string number", general representative production external.
4, finally 1 digits (SP) is usually "0" for inspection yards, current temporary. Set aside.
IMEI code has uniqueness, stick in mobile phone on the back of the sign, and literacy in mobile phone memory. It is also the manufacturer of "mobile phone in archives" and "id".
TAC
TAC (device type approval number) by the European model authentication center allocation. TAC yards before three in different times can produce change, the past TAC yards before three in now on their mobile phones does not arise. The past some old model phones are basically 446/448 beginning, such as moto v328 nokia, and even though the same phone 711bn in different period will have different TAC code like everybody owns the most familiar 8210 upgrade, if the three 448902 cannot upgrade is different, because the CPU. Therefore the past say as long as is the same type of cell phone TAC code must be the same argument is not very accurate, like again Ericsson mobile phone of the same model T39MC in different regions of the place also will have different number for 520406 Hong Kong, mainland HangHuo for 520407. We know that these differences after can pass TAC yards "device recognition", and don't bother to remember the IMEI 7.8 digit represents the origin.
FAC
FAC (factory assembly code) by manufacturer coding, usually expressed manufacturers and assembly. Sometimes FAC cannot fully prove whether HangHuo, mobile phone T68 postmarketing heat caused by shortage, so buy once agent has mobilized part of Ericsson Malaysian production (FAC yards 71) emergency rescue, so this part is T68 is also "net permit HangHuo". (front we we said the IMEI and obtain the connection between the net permit) however, it should be pointed out that this part T68 confined to early part of software version for the R1B T68. FACIMEI code is not unchangeable even for the same origin of products, including Siemens 3508I and MOTO C300 because its yield great has been from the beginning of 37 upgrade to 40, while the C300 HangHuo FAC is 80/81/82. Is especially important European model authentication center this year the IMEI redistribution, FAC and TAC merge together, FAC yards of digital unified from 00 beginning, so no matter what type the 7 what brand is 00, 01 bits are achievement, or 03 so backward arrangement.
SNR yards
SNR codes sequence number, also by manufacturer allocation. Identify each TAC and FAC of some equipment. Every mobile phone is not the same. The SNR of simple said the number of mobile phone can show that produce date, usually the successively numerical model to illustrate the factory time, so if the later part just listed the near the IMEI phone appeared on six figures you have to be careful because just listed soon mobile its SNR most will not exceed four, everybody can when advertent in buying machine. Perhaps this can be modified by differential cellular phone whether good way of JS. One of the IMEI
SP spare yards
SP spare yards, now SP basically no like past articles puts it "is commonly 0", its number by manufacturer do Settings, negligible
Of course, some mobile phone in an IMEI did on his own definition of Ericsson mobile phone on standby. When the input * # 06 # will appear 17 IMEI, its last two main function is used to identify the software version. Here need explanation is samsung V200 also begin to use 17 IMEI, the last two main function is used to identify the software version, generally speaking numerical lower version also lower, such as the T618 R1A version for 02 and R1F version is 03, the latest R1L version is 05.
role
IMEI for TAC + FAC + SNR + SP. IMEI (International Mobile Equipment Identity) is the International IMEI Mobile Equipment Identity code for International Mobile Equipment identification number, is by the 15th of digits "electronic string number", it and per handset one-to-one, and this code is the world's only. Each a mobile phone after completion of the assembly will be given a global only a group of number, this number from manufacturing to consign use will be manufactured by the makers records.
Check method
Cellphones input * # 06 # lose my this five key descriptor, the phone line will appear on the screen, which is the Arabic numeral string of this phone number.
Above says use method for G, C nets mobile phone network with the aforesaid methods cannot view.
