Once you have received the code (usually an 8 to 16-digit number), follow these steps:
Be careful! You usually only have a limited number of attempts (often 3 or 10) to enter the code correctly before the phone is permanently locked to the original network.
For (Orange's digital brand), "desimlocker" means unlocking a mobile device so it can be used with a SIM card from a different carrier.
Open the app, navigate to your mobile line management, and look for "Désimlockage".