My classmate borrowed my mobile phone and later found several SMS verification codes. He asked him what he had said. What did he get?

Don't let others know the verification code at will. If your mobile phone is bound with a bank card, you can transfer money by entering the verification code. It is also possible that you have registered any website with your mobile phone number and need to log in with a verification code. What software to download, as long as your mobile phone is not bound with a bank card, is generally nothing.