An electronic device detachably mountable on a wearable device, the electronic device comprising: a display; a memory; and at least one processor electrically connected with the display and the memory, the at least one processor is configured to: control the display to display (810, 910) a first field of view, FOV, of a first image received from an external camera in a first mode; temporarily terminate (814, 914) the display of the first image in response to an input received on the display of the electronic device in the first mode; store screen information corresponding to the first FOV of the first image in the memory, wherein the screen information includes at least one of: a time at which display of the first image was temporarily terminated and coordinates indicating a viewing position within the first image when display of the first image was temporarily terminated; and in response to detecting (812, 916) that the electronic device is mounted on the wearable device: obtain resolution information associated with the wearable device responsive to detecting mounting of the electronic device on the wearable device and transmit (816, 918) the obtained resolution information to the external camera; receive (818, 920) a second image from the external camera; and control the display to display (820, 922) the second image in a second mode, based on the stored screen information, having a viewing position corresponding to the at least one of the time and the coordinates stored in the screen information; wherein the first mode includes display of the first image in a single mode, and the second mode includes display of the second image in a dual mode; and wherein, in the dual mode, the second image is displayed as a left-eye image corresponding to the left eye of a user and a right-eye image corresponding to the right eye of the user to provide a stereoscopic effect. a display; a memory; and at least one processor electrically connected with the display and the memory, the at least one processor is configured to: control the display to display (810, 910) a first field of view, FOV, of a first image received from an external camera in a first mode; temporarily terminate (814, 914) the display of the first image in response to an input received on the display of the electronic device in the first mode; store screen information corresponding to the first FOV of the first image in the memory, wherein the screen information includes at least one of: a time at which display of the first image was temporarily terminated and coordinates indicating a viewing position within the first image when display of the first image was temporarily terminated; and in response to detecting (812, 916) that the electronic device is mounted on the wearable device: obtain resolution information associated with the wearable device responsive to detecting mounting of the electronic device on the wearable control the display to display (810, 910) a first field of view, FOV, of a first image received from an external camera in a first mode; temporarily terminate (814, 914) the display of the first image in response to an input received on the display of the electronic device in the first mode; store screen information corresponding to the first FOV of the first image in the memory, wherein the screen information includes at least one of: a time at which display of the first image was temporarily terminated and coordinates indicating a viewing position within the first image when display of the first image was temporarily terminated; and in response to detecting (812, 916) that the electronic device is mounted on the wearable device: obtain resolution information associated with the wearable device responsive to detecting mounting of the electronic device on the wearable device and transmit (816, 918) the obtained resolution information to the external camera; receive (818, 920) a second image from the external camera; and control the display to display (820, 922) the second image in a second mode, receive (818, 920) a second image from the external camera; and control the display to display (820, 922) the second image in a second mode, based on the stored screen information, having a viewing position corresponding to the at least one of the time and the coordinates stored in the screen information; wherein the first mode includes display of the first image in a single mode, and the second mode includes display of the second image in a dual mode; and wherein, in the dual mode, the second image is displayed as a left-eye image corresponding to the left eye of a user and a right-eye image corresponding to the right eye of the user to provide a stereoscopic effect.