What is the default password for GSM?

Hello, if you are a customer of Jiangsu Mobile, the default initial service password of your mobile phone number is 123456, and the initial password is invalid. You need to modify it before you can use it. You can reset the password in the online business hall /index.jsp#MMFW_MMCZ; You can also send a short message "342* ID number" or "CZMM* ID number" to 10086 to reset the password. The SMS mode is only open to customers with ID cards. For your reference, thank you for using China Mobile Communication.