Is it dangerous for someone to ask me to send a text message and then bind my mobile phone number and unlock it?

The danger comes quietly when you provide the verification code.

The possible hazards of leaking verification code are as follows:

Leaking SMS verification code is likely to cause personal privacy, account number and property loss. SMS verification code is an effective verification code system by sending verification codes to mobile phones. Now many websites and apps have mobile phone authentication login. Users only need to enter their mobile phone number and correct verification code to log in. Once the verification code is leaked to others, criminals can log in with your mobile phone number, steal your account password and personal information, and even cause property losses.