Your ZTE MF60 is a solid portable router. Don’t risk bricking it or infecting your PC over a free calculator that probably won’t work. Unlock it the right way, and enjoy using any SIM card on the go.
If you are not comfortable with unlock code calculators, here are safer alternatives: Zte Mf60 Unlock Code Calculator 16 Digit
They ask for your IMEI, charge a small fee ($8–$20 for MF60), and email a guaranteed 16-digit code within 24 hours. Your ZTE MF60 is a solid portable router