But what if I need a verification code when I log in? The mobile phone was stolen and I don't know the verification code.

You can reissue your calling card if your mobile phone is stolen. No matter what account you register, you always use your mobile phone number. As long as your mobile phone number is not occupied by others, get a new card and a new mobile phone. When you need to verify, you can still receive the verification code, which has little to do with the loss of your mobile phone. Of course, if you don't buy a new mobile phone if you lose it, or if you don't replace it with a new one, it is also counted separately.