First, open the Baidu mobile assistant software installed on the mobile phone, then enter "caller ID" in the search bar, download and install the theme caller ID to the mobile phone. Open the "Theme Call Show" software just installed on the mobile phone, and click the "Personal Center" button on the right. Set the signature from the signature content recommended by the system, or DIY sets its own signature content to make personal micro-journals. The signature content will be displayed on the other user's mobile phone during the call, and the personal microblog will be sent to the other user's mobile phone when hanging up.