He checked the phone’s fastboot screen again. Something was different. The serial number at the bottom had changed. Not much—just one character. A '3' had become an 'E'.
It is highly effective for older models like the E352 , E353 , and E3131 . However, it generally does not work on modern Huawei smartphones or 4G/5G modems using the "v3" or higher security algorithms. huawei unlock code calculator v2