The mobile phone transfer verification code of the Postal Savings Bank issued 4 digits, and it said that it needed 6 digits. What happened?

Don't believe this is a scam message. The telephone number of the Postal Savings Bank is 95580. If it is a string of coded numbers, it is better to leave it alone. The postal notification verification code is generally 4 digits, and it is password verification, that is, when you enter the password, it is likely to be modified. As long as you have no unusual transactions during this period, take your ID card to the bank to check all the accounts that have been recently deducted, and don't delete the message to the staff.