An electronic device is provided. The electronic device includes a housing including a first plate, a second plate, and a side member, the side member being attached to or integrally formed with at least one of the first plate or the second plate, a display positioned inside the housing and configured to form a display area through the first plate, a first touch panel positioned inside the housing and interposed between the display and the first plate or integrally formed with the display and including a first plurality of sensing elements having a first touch point density, a second touch panel positioned inside the housing, adjacent to the side member, and oriented to face a portion of the side member, and including a second plurality of sensing elements having a second touch point density lower than the first touch point density, and a processor.