Warning: This method is irreversible and can brick your device if interrupted during the flash process.
The MF920U supports LTE bands 1, 3, 5, 7, 8, 20, 28, 38, 40, 41 (global version). After unlocking, you can sometimes lock to a specific band via the engineering menu: Unlock Zte Mf920u
The IMEI (International Mobile Equipment Identity) of your MF920U is registered in a database. Each time you insert a SIM card, the device checks two things: Warning: This method is irreversible and can brick
Without a valid unlock code or allowed network profile, the device will show errors like: Without a valid unlock code or allowed network