An electronic device includes a touch module, a display module, and a control module. The touch module is configured to detect a touch input. The display module is disposed under the touch module. The control module is electrically connected to the touch module and the display module and configured to: detect a contact area of the touch input on the touch module; make the display module display a first input interface when the contact area is greater than a first threshold area; and make the display module display a second input interface when the contact area is smaller than a second threshold area, in which the second threshold area is equal to or smaller than the first threshold area.