Hello AdrianoAlmeida Andrade,
thank you for posting on the Microsoft Community Forums.
Firstly, on supported devices running Windows 10 or newer BitLocker will automatically be turned on the first time you sign into a personal Microsoft account (such as @outlook.com or @hotmail.com) or your work or school account.
As for the issue with not receiving the SMS code, there could be several reasons for this. It could be due to a delay in the SMS delivery, or it could be due to an issue with your mobile carrier. Although it has been out of my scope, there are some steps you can try:
- Make sure that your mobile number is correct and up to date in your Microsoft account.
- Check your spam or junk folder in your email to see if the SMS code email was filtered there.
- Try requesting the SMS code again after a few minutes.
- Contact your mobile carrier to ensure that there are no issues with receiving SMS messages.
Regards,
Lei