Apparatus and method for measuring a temperature in an electronic device

Device and method for measuring the temperature in the electronic apparatus according to an embodiment of the present invention, and measuring the amount of light of the optical signal reflected from the object, the area of ​​the temperature measuring expected area of ​​the object based on the measured amount of light it is possible to determine and to output a temperature measurement information message based on the comparison result and the determined area and the reference area.