The small green dot in the upper-right corner of many Android phones can seem mysterious when it suddenly appears. However, it is not usually a system error or something to worry about. Instead, the indicator is a built-in privacy feature designed to inform users whenever their phone’s camera or microphone is being accessed.
On many Android devices, including Samsung phones, the green dot appears whenever an app actively uses the camera, microphone, or both. Whether you are making a video call, recording audio, taking a picture, or using social media, the indicator confirms that a sensitive sensor is currently active.