What is the initial PIN password of Apple 5S?

If your mobile phone card is locked, you can unlock it according to the following traffic:

The password of PIN code is initially set to 1234. If the PIN code is entered incorrectly for three consecutive times, the card will be locked. At this time, you need to enter the PUK password to unlock it. However, after the PUK code 10 is entered incorrectly, the SIM card will not be restored. You can check your PUK code information in the telephone room or Internet room:

Handhall: my security center-my PUK password;

Cyberspace: log on to the home page of online business hall-query-my basic information-number information-PUK code query.