How does CCB untie the old mobile phone?

The steps for China Construction Bank to untie the old mobile phone are as follows:

1. If you can find the original mobile phone, enter My Service menu under the mobile banking interface of China Construction Bank, select Manage Binding Devices, and then click Unbind to unbind the mobile phone.

2. The reason for the loss of the original mobile phone cannot be unbound on the original mobile phone. Log in to China Construction Bank's online banking, select my account, then enter other account services, select channels for interactive signing, and finally click the mobile banking client to unbind, and unbind according to the prompts.