Taobao imei unlocking principle

Taobao imei unlocking principle: id can only be changed for the motherboard.

1. Log in to Alipay Personal Center and find the account setting point.

2. Click Account Settings to open the following interface. Find the payment password and click the reset button behind the payment password.

3. It will appear after clicking Reset. Choose the password reset method according to your own convenient way. What you need is: mobile phone verification SMS, ID number, scanned copies of the front and back of ID card, question password, etc. Here I choose SMS verification+ID number verification.

The IMEI code of a mobile phone consists of 15- 17 digits:

The first part, TAC, is a type assignment code, which consists of 8 digits (6 digits in the early days) and is a code to distinguish the brand and model of mobile phones. This code is assigned by GSMA and its authorized institutions.

Among them, the first two digits of TAC code are also the identifier of the reporting institution, which is the code that authorizes the IMEI code distribution institution. For example, 0 1 is CTIA in the United States, 35 is BABT in Britain, and 86 is TAF in China.

The second part FAC, that is, the final assembly code, consists of 2 digits, which only exists in early mobile phones with 6 digits of TAC code, so the TAC and FAC codes are 8 digits in total. FAC codes are used to distinguish the production within the manufacturer.

The SNR, serial number and serial number in the third part are composed of six digits starting from the ninth digit, which are used to distinguish the production serial number of each mobile phone.