1. Find the setting (a gear-like) option in the phone interface, and click to enter the setting interface, as shown in the figure.
2. Find the "More Settings" option in the settings interface, and click to enter, as shown in the figure.
3. Find the "Language" option in the "More Settings" interface and click to enter, as shown in the figure.
4. In the Language interface, select Simplified Chinese as Chinese, as shown.