The meanings of the 20 digits on the back of the SIM card are as follows:
Top 6 digits: 898600 China Mobile; 898601 China Unicom
7th digit: service access number, corresponding to 4, 5, 6, 7, 8, 9 in 134, 135, 136, 137, 138, 139;
8th digit : The function bit of the SIM card: generally 0, the current prepaid SIM card is 1;
the 9th and 10th digits: the code of each province;
the 11th and 12th digits: the year number;
the 13th digit: the supplier code;
the 14th— 19 digits: user identification code;
20 digits: check digit.
China Mobile:
For example, 8986 00 79 09 04 4 9311287
has the following meanings of the strings after segmentation:
8986 represents the country China
00 represents the operator China Mobile (as if 02 is also?)
79 represents the third and fourth digits of the mobile phone number, so the card is 1379 ****
09 represents the number of the issuing province, the code is as follows, it is used internally by China Mobile, it can only be accurate to the province
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01: Beijing 02: Tianjin 03: Hebei 04: Shanxi 05: Inner Mongolia 06: Liaoning 07: Jilin 08: Heilongjiang
09: Shanghai l0: Jiangsu 11: Zhejiang 12: Anhui 13: Fujian 14: Jiangxi 15: Shandong 16: Henan
17: Hubei 18: Hunan 19: Guangdong 20: Guangxi 21: Hainan 22: Sichuan 23: Guizhou 24: Yunnan
25: Tibet 26: Shaanxi 27: Gansu 28: Qinghai 29: Ningxia 30: Xinjiang 31: Chongqing
Another: 13800138000 Recharge card password The first two digits and the two serial numbers 6 and 7 are used. The province number
04 represents the year of issuance (production) of the card, 2004, and
1 represents the manufacturer. The code is as follows
--------------- -----------
0: The French Schlumberger manufacturer is in Hunan
1: The French GEMPLUS manufacturer is in Tianjin (this card has the GEMPLUS mark on the chip contact point, note that it is not GSMPLUS)
2: German Orga (the code name was later replaced by Wuhan Tianyu)
3: Jiangxi Jiede
4: Eastcom Peace
5: Datang Telecom
6: Aerospace Jiuzhoutong
7: Beijing Watch
8: Oriental Yingka
9: Beijing Huahong
A: Shanghai Kesi
B: Aerospace Zhitong
, the last seven digits are unknown and are more random, sometimes the same as the last digits of the mobile phone number
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China Unicom:
For example, 8986 01 04 05 021 063908 S
segmented strings have the following meanings:
8986 represents the country China
01 represents the operator China Unicom (in addition, CDMA is 03)
04 represents the year of issuance (production) of the card 2004
05 represents the mobile phone The third and fourth digits of the number, so the card is 1305****
021 represents the area code of the card, such as Shanghai 021, Hangzhou 571... It can be accurate to the city
The last six digits are more random
, S represents the manufacturer, the code is as follows
-------------
A: Oriental Yingka
B: Boolean Company
C: Shanghai Kesi
D: Oberthur
E: Eastcom Peace
G: France GEMPLUS
H: Beijing Huahong
S: France Schlumberger
T: Datang Telecom
W: Beijing Watch
Y: Wuhan Tianyu
J: Jiangxi Jiede