What is the password to open SMS on z5 mobile phone?

The mobile phone SMS password belongs to the privacy software settings. It is a password set by yourself and is not fixed. Mobile phone SMS passwords are also called mobile phone dynamic passwords. Generally, they are used for identity authentication when users make transactions. The merchant will send the password to the customer's mobile phone in the form of a text message. The customer enters this password during the transaction to ensure that it is him/herself who is operating, improving The security of the transaction.