A foldable mobile terminal apparatus and control method are provided. The apparatus includes a first section, a second section coupled to the first section and movable between a folded state and an unfolded state including a plurality of partially folded states, a flexible display coupled to the first and second sections, a first sensor, and at least one processor to, while the mobile terminal apparatus is partially folded, identify one of the partially folded states of the mobile terminal apparatus, and control the display to display information corresponding to a compass direction based on magnetic related information obtained by the first sensor and according to the identified partially folded states. The electronic device can prevent distortion of the first sensor caused by the display by calibrating the geomagnetic value of the sensor based on an angle between a first surface of a first section and a third surface of the second section.