An electronic device comprising: a sensor (176; 240); a memory (130; 230); a display (160; 260); and a processor (120; 220), wherein the processor is configured to: determine bio-information and blood pressure information of a user measured through the sensor; determine reliability of calibration of the blood pressure information, based on at least one of elapsed time of the calibration, the bio-information, and the blood pressure information; determine, based on the reliability of the calibration, whether an event associated with the calibration occurs; display a user interface, UI, to request another calibration, through the display, when the event is determined to have occurred; display a place information associated with the another calibration on a city scale if the reliability of the calibration is in a higher stage; display the place information associated with the another calibration on a neighborhood scale if the reliability of the calibration is in an intermediate stage; and display a closest place from the electronic device associated with the another calibration or display a path from the current location of the electronic device to the closest place if the reliability of the calibration is in a lower stage or if an expiration time point has come to pass, wherein the expiration time point is a point when the reliability of the calibration becomes zero. a sensor (176; 240); a memory (130; 230); a display (160; 260); and a processor (120; 220), wherein the processor is configured to: determine bio-information and blood pressure information of a user measured through the sensor; determine reliability of calibration of the blood pressure information, based on at least one of elapsed time of the calibration, the bio-information, and the blood pressure information; determine, based on the reliability of the calibration, whether an event associated with the calibration occurs; display a user interface, UI, to request another calibration, through the display, when the event is determined to have occurred; display a place information associated with the another calibration on a city scale if the reliability of the calibration is in a higher stage; display the place information associated with the another calibration on a neighborhood scale if the reliability of the calibration is in an intermediate stage; and display a closest place from the electronic device associated with the another calibration or display a path from the current location of the electronic device to the closest place if the reliability of the calibration is in a lower stage or if an expiration time point has come to pass, wherein the expiration time point is a point when the reliability of the calibration becomes zero. determine bio-information and blood pressure information of a user measured through the sensor; determine reliability of calibration of the blood pressure information, based on at least one of elapsed time of the calibration, the bio-information, and the blood pressure information; determine, based on the reliability of the calibration, whether an event associated with the calibration occurs; display a user interface, UI, to request another calibration, through the display, when the event is determined to have occurred; display a place information associated with the another calibration on a city scale if the reliability of the calibration is in a higher stage; display the place information associated with the another calibration on a neighborhood scale if the reliability of the calibration is in an intermediate stage; and display a closest place from the electronic device associated with the another calibration or display a path from the current location of the electronic device to the closest place if the reliability of the calibration is in a lower stage or if an expiration time point has come to pass, wherein the expiration time point is a point when the reliability of the calibration becomes zero.