Electronic device with dual display screens

An electronic device comprising:

• a liquid crystal display (LCD) screen configured to display a primary user interface when the electronic device powers on;
• an electronic paper display (EPD) screen configured to display a predefined content set by users when the electronic device powers off;
• an EPD control module;
• a storage configured to storage the predefined content;
• a switch module configured to power on or power off the electronic device in response to user's operations, and generate a corresponding control signal;
• and
• a central processing unit (CPU) configured to generate a display signal to the EPD control module when the control signal is a power off signal;
• wherein the EPD control module receives the display signal, obtains the predefined content stored in the storage, and directs the EPD screen to display the predefined content obtained.