What are the uses of akey, ESN and imsi?

Akey:Akey is also called authentication code. It is a set of numbers with 16 digits and 16 radix. It must have been solved by a friend of Telecom. Most of this business unit is called the Support Center or noc. We can choose to turn off Akey (that is, turn off authentication) or copy Akey, and find that Akey needs higher permissions than authentication. In order to prevent the mobile phone from being merged by others, it is suggested to write Akey directly into the mobile phone without turning off authentication.

ESN: ESN is a set of 8 digits 16. The ESN of the mobile phone number you are using now can be found by your friends in telecommunications, and can be found in many places, including the telecom front desk, or you can read it directly from the card with your mobile phone. You can read the mobile phone directly by using a mobile phone such as 6700 or 6800. The operation is to press ##778# in the dialing interface and select View. The ESN (hexadecimal) entry shows your ESN code. Because HTC6950 is not completely unlocked now, find a telecom friend and report the ESN of the HTC6950 mobile phone you bought to your telecom friend (press ##778#) and ask him to write it in HLR.

IMSI: International Mobile Subscriber Identification Number International Mobile Subscriber Identification Number is a sign to distinguish mobile subscribers, which is stored in SIM card and can be used to distinguish effective information of mobile subscribers. Its total length does not exceed 15 digits, and numbers from 0 to 9 are also used. Among them, MCC is the country code of mobile users, accounting for 3 digits, and MCC in China is stipulated as 460; MNC is the mobile network number, which consists of at most two digits and is used to identify the mobile communication network to which the mobile user belongs; MSIN is a mobile subscriber identification code, which is used to identify mobile subscribers in the mobile communication network.

In order to make a normal call, three passwords must be unlocked: key, ESN (new mobile phones now use meid or pesn) and IMSI.