Electronic device comprising force sensor

An electronic device comprising:

• a housing including a first surface facing a first direction and a second surface facing a second direction that is opposite to the first direction;
• a display interposed between the first surface and the second surface and exposed through the first surface;
• a touch sensor interposed between the first surface and the second surface and configured to sense a touch of an external object on the display;
• a force sensor interposed between the first surface and the second surface and configured to sense pressure by the touch;
• at least one processor electrically connected with the display, the touch sensor, and the force sensor;
• and
• a memory electrically connected with the processor,
• wherein the memory stores instructions that, when executed, cause the processor to:
• decrease a frequency of waves of an electrical signal supplied to sense the pressure to the force sensor if the display is turned off or while the display operates in a low-power mode;
• activate a partial area of the force sensor while an entire area of the display is turned off;
• receive data associated with the pressure by the touch from the force sensor while the display is turned off or while the display operates in the low-power mode;
• determine whether the pressure is larger than or equal to a first level, based on the data associated with the pressure;
• turn on, if the pressure is larger than or equal to the first level, the display at least partially;
• display, if an application is executed, a first user interface associated with the application in at least a partial area of the display, wherein the first user interface associated with the application includes at least one virtual object associated with at least one function of the application;
• display, if pressure of a second level by the touch is sensed in the partial area of the force sensor while the first user interface is displayed, a second user interface different from the first user interface;
• execute, in response to an input at the at least one virtual object, the at least one function of the application, wherein the at least one function is executed independent of an execution screen of the application;
• display, if pressure of a third level by the touch is sensed in the force sensor while the second user interface is displayed, the execution screen of the application in a whole area of the display;
• display, if the pressure of the first level by the touch is sensed in the partial area of the force sensor while no application is executed, information or a third user interface associated with a function of the electronic device;
• and
• increase the frequency of waves of the electrical signal supplied to sense the pressure to the force sensor, during a specified time after at least one of the pressure of the first level or the pressure of the second level is sensed in the partial area of the force sensor while the display is turned off or while the display operates in the low-power mode.