an illuminance sensor;

a camera;

a display circuit;

a memory; and

a processor operatively connected to the illuminance sensor, the camera, the display circuit, and the memory,

wherein the processor is configured to:

measure illuminance through the illuminance sensor,

identify an operation state of the electronic device, the operation state comprising at least one of a remaining battery of the electronic device, temperature of the electronic device, a mode configured in the electronic device, or information on applications being executed,

configure brightness of a first virtual object, based on the measured illuminance,

identify a distance between the first virtual object and a second virtual object, the distance being measured in any direction from the first virtual object to the second virtual object,

configure brightness of the second virtual object, based on the brightness of the first virtual object and the identified distance, the brightness of the second object being reduced as the distance between the first virtual object and a second virtual object increases, and

control displaying of the first virtual object and the second virtual object through the display circuit, based on the configured brightness.

an augmented reality (AR) device configured to:

acquire image data through a camera,

measure illuminance through an illuminance sensor,

identify an operation state of the AR device, the operation state comprising at least one of a remaining battery of the AR device, temperature of the AR device, a mode configured in the AR device, or information on applications being executed,

transmit the image data and a measured illuminance value to an external device, and

display virtual objects, based on display information of the virtual objects received from the external device; and

the external device configured to:

receive the image data and the measured illuminance value from the AR device, analyze the image data,

configure brightness of a first virtual object included in the image data, based on the measured illuminance,

identify a distance between the first virtual object and a second virtual object, the distance being measured in any direction from the first virtual object to the second virtual object,

configure brightness of the second virtual object, based on the brightness of the first virtual object and the identified distance, the brightness of the second object being reduced as the distance between the first virtual object and a second virtual object increases, and

transmit display information of virtual objects including the brightness configured in the first virtual object and the second virtual object to the AR device.

measuring illuminance through an illuminance sensor of the electronic device;

identifying an operation state of the electronic device, the operation state comprising at least one of a remaining battery of the electronic device, temperature of the electronic device, a mode configured in the electronic device, or information on applications being executed;

configuring brightness of a first virtual object, based on the measured illuminance;

identifying a distance between the first virtual object and a second virtual object, the distance being measured in any direction from the first virtual object to the second virtual object;

configuring brightness of the second virtual object, based on the brightness of the first virtual object and the identified distance, the brightness of the second object being reduced as the distance between the first virtual object and a second virtual object increases; and

controlling displaying of the first virtual object and the second virtual object through a display circuit of the electronic device, based on the configured brightness.