If you use U-Shield to handle business through mobile banking, and you encounter the "3 10" error prompt, please try the following: 1. Check whether the U shield screen shows "Finance @ Home", if not, please plug in the U shield again; 2. Click the "More" option in mobile banking to detect the new version upgrade of the mobile banking client; 3. Uninstall the mobile banking client, visit m.icbc.com.cn with your mobile phone, download and install the client again, and then log in.