Electronic device, and device and method for protecting the electronic device

A protection device for protecting an electronic device, the protection device comprising:

• a connection portion connected with the electronic device;
• an actuator configured to actuate the protection device;
• a controller configured to control the actuator based on a control signal obtained from the connected electronic device through the connection portion;
• and
• an opening and closing portion formed to cover and uncover a display of the electronic device when being open and closed,
• wherein the controller is configured to control the actuator to open or close the opening and closing portion.

A method for protecting an electronic device, the method comprising:

• detecting connection of a cover to the electronic device;
• detecting a motion state of the electronic device upon connection of the cover;
• and
• controlling an actuator of the connected cover based on the detected motion state, and such that an opening and closing unit of the cover covers or uncovers a display of the electronic device.