What is the service password that needs to be entered to recharge the mobile phone shenzhen tong with a mobile phone? Is it the password of bank card or mobile phone card?

If you mean the service password of Unicom's mobile phone, the service password is an effective certificate to identify your owner and an important certificate for Unicom users to handle business. For national mobile phone users who just activated after 20101,the service password is the last six digits of your mobile phone number, and the initial service password cannot be queried or processed. I suggest you reset it. You can edit the short message "MMCZ#"

Tips: There are differences in business policies in different cities, and local policies shall prevail.