In many regions (EU, UK, Canada, and some US carriers), it is legally required to unlock your device for free once certain conditions are met (e.g., account in good standing, device paid off).
: Ensure your device still has remaining unlock attempts. If it says "0 attempts left," a code will no longer work. Go-Unlock-Code-Calculator/Alcatel.go at master - GitHub alcatel mw45v unlock code calculator free