SIM lock code

A SIM lock code, also known as a SIM pin, is a security feature on mobile phones that requires a password to access the SIM card. This prevents unauthorized use of the SIM card, such as making calls or sending messages, if the phone is lost or stolen. The SIM lock code is usually set by the mobile service provider and can be changed by the user. It is typically a four-digit code and should be kept confidential to ensure the security of the SIM card.