China Construction Bank has no option to unbind.

In this case, you can try the following steps.

Login to Mobile Banking of China Construction Bank: Log in to the mobile banking client of China Construction Bank with your account number and password.

Search related functions: search for security center, account management, fast payment management, authorization management, my equipment, equipment management and other related modules in the new mobile banking. If you can't find an explicit unbind button, you may need to check the list of devices to delete or unbind.

Customer Service: If the mobile banking client can't operate, you can call the customer service hotline of China Construction Bank for manual help, and follow the customer service instructions or the staff will help to unbind it. Or go to the nearby construction bank outlets and be guided by the staff, especially in some high-level security settings or complicated situations.

Update client: Make sure your mobile banking client version is up to date. Sometimes the old version may not have some functions, and you may find relevant functions after updating to the latest version.