Will the secondary authentication data of the mobile phone card be stored on the mobile phone?

The secondary authentication data of the mobile phone card is generally not stored on the mobile phone. The secondary authentication of mobile phone cards usually includes inputting SMS verification code or other verification methods. This information is temporary and will not be stored in the memory of mobile phones or other places. Mobile operators usually store authentication information on the server and verify it every time.

However, it should be noted that the secondary authentication of the mobile phone card may use some device functions on the mobile phone, such as SMS function or fingerprint recognition, which need to be operated on the mobile phone. But these operations do not mean that the authentication information will be stored on the mobile phone, but only used to verify the identity.

Generally speaking, the secondary authentication data of the mobile phone card will not be stored on the mobile phone, and it is mainly verified through interaction with the carrier server.