Received text message with PIN security code

When receiving a text message requesting a PIN code, it is necessary to verify whether the SIM card belongs to the customer service center. Users generally do not reply!

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.

Chinese name

PIN code

Foreign name

Personal Identification Number

Interpretation