In the second case when at least one digit is A - F range the check-digit algorithm uses base 16 arithmetic. When the all elements are from '0'-'9' range than the check-digit is converted by using the normal base 10 Luhn algorithm. Hexadecimal Form – this standard is expressed in 14 digits grouped together and applies whether all digits are in the decimal range or whether some are from the range A - F.We can distinguish two standard formats for MEIDs identifier, and both may contain an optional check-digit: 24-bit number assigned by the manufacturer.The MEID Number consists of the following parts: The MEID is a replacement for ESN (electronic serial number) since 2006. The MEID number is permanently stored in the device. ![]() The MEID Number (Mobile Equipment Identifier) is a unique 56-bit identification code for CDMA mobile devices. Generally speaking each device have assigned one IMEIs, ESN or MEID. ![]() IMEIs, ESNs and MEIDs are numbers and codes used by the mobile producers in order to ensure the unique identificator for each devices.
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