Mobile healthcare device and method of operating the same

A non-transitory computer-readable storage medium storing instructions that, when executed by a processor included in a watch-type mobile device wearable on a wrist of a user, cause the processor to:

• control a display to display a guidance screen comprising first information to guide the user to contact at least one of a plurality of electrodes, the plurality of electrodes being external to the display and being configured to receive bio information from the user;
• in response to a contact between the user and the plurality of electrodes while the guidance screen is displayed, control the display to change the guidance screen to a dynamic screen for guiding the user to maintain the contact with the plurality of electrodes, the dynamic screen being without the first information;
• control the display to start displaying, on the dynamic screen, numbers changing according to time in a descending order;
• receive the bio information of the user from the plurality of electrodes while the dynamic screen is displayed;
• and
• change the dynamic screen to a new screen indicating state information of the user, the state information being obtained based on the bio information that is obtained while the dynamic screen is displayed, and the new screen being without the numbers.