Remember: A free unlock code calculator that claims to work on all models is too good to be true. Always verify, quarantine suspicious files, and protect your IMEI number as you would your Social Security number.
The calculator would then pass the IMEI through a proprietary mathematical hash function—the "V2 algorithm." Early Huawei phones used a simple checksum; the V2 was rumored to use a modified SHA-1 hash with a static salt. In theory, if you knew the salt, you could generate an infinite number of valid unlock codes. Huawei Unlock Code Calculator V2