The green dot appearing in the upper corner of an Android phone can seem strange, especially when you do not remember activating anything. However, it is not a system error or random notification. On many Android devices, including Samsung phones, the indicator is a built-in privacy feature that appears whenever an app accesses the camera or microphone.

Whether you are making a video call, recording audio, taking pictures, or using another application requiring those sensors, the green dot lets you know they are active. The feature was introduced as smartphones placed greater emphasis on protecting users from hidden sensor access. Most of the time, the indicator simply confirms that an app is doing exactly what you expect. But what happens when the dot suddenly appears while you are not using the camera, microphone, or any app that should need them? That is when you should investigate..