Since iOS 14, the iPhone sometimes displays a small green or orange dot in the upper right corner. What is that?
This is simply an indication that your Apple device is listening or watching. Apple has introduced this small indicator to tell you that either the camera is on (green dot) or the microphone (orange dot). It’s similar to your Mac: if the small green LED next to the webcam lights up, you know that the webcam is on. This happens now on the iPhone, but as a small dot directly on the display.
In addition, you can find this information in more detail in the control center: there you can read in words that the microphone or camera is switched on. Even if you take pictures, the hint that the camera is in use appears – at least it’s consistent.