The Minsheng Bank visa credit card pin code is a security identification code, the last three digits. PIN code (PIN1), the full name is Personal Identification Number. It is the personal identification password of the SIM card. The PIN code of the mobile phone is a security measure to protect the SIM card and prevent others from stealing the SIM card. If the power-on PIN code is enabled, a 4-digit PIN code must be entered every time the phone is turned on. When the wrong PIN code is entered three times, the phone will automatically lock the card and prompt you to enter the PUK code to unlock. You need to use the service password to call the operator's customer service hotline. The customer service will inform you of the initial PUK code. After entering the PUK code, the PIN code will be unlocked.

It should be noted that if you enter the wrong PIN code three times, the phone will automatically lock the card and prompt you to enter the PUK code to unlock it. At this time, you are close to the edge of danger. If you do not know your PUK code Just don't move for now. Take the service password and call the customer service hotline. The customer service will tell you the initial PUK code. After entering the PUK code, the PIN will be unlocked and you can reset the password. Therefore, if you change the PIN code without authorization, you must keep in mind. PIN1 code is a personal identification number. It is a storage unit inside the SIM card and is set through the mobile phone. When turning on the phone, you will be asked to enter the PIN1 code. Entering the PIN1 code incorrectly three times will result in a "card lock" phenomenon. At this time, the operator needs to provide the PUK code and enter it on the phone keyboard to unlock it. If you enter the PUK code incorrectly 10 times, the card will be "burned". You must bring the valid ID of the machine owner to the business hall of the operating network to get a card replacement. The PIN2 code is used when setting up mobile phone billing. If you enter incorrectly three times, the phone will need to be unlocked with the PUK2 code. The process is the same as the PIN code and PUK code introduced previously. However, these two passwords are related to network billing and modification of the internal data of the SIM card, so they will not be made public, and even if the PIN2 password is locked, it will not affect the normal use of the phone. Therefore, there is no need to pay attention to the PIN2 code and PUK2 code.