Permanent unlock that doesn't void warranties; supports almost all ZTE models. Paid Service
ZTE’s older dongles (pre-2015) used a relatively simple XOR-based checksum algorithm. Newer 4G dongles use a more complex method truncated to 16 decimal digits. The process looks like this: zte modem dongle unlock code calculator -16 digit-
Extra characters added to the IMEI during the calculation to prevent simple reverse engineering. Methods for Obtaining the Code Permanent unlock that doesn't void warranties