Is Apple's mobile phone transfer verification code safe?

The security level of SMS verification code transmission is not high, which is really unsafe from a technical point of view. Otherwise, there will be no frequent media reports that the money in a bank account is missing, and the money is damaged due to the leakage of SMS verification code.

However, the popularity of mobile phones is very high, and the cost of using SMS verification code is extremely low and the operation is simple. At the same time, the security factor of SMS verification code transfer is high, so it is still used by banks.