That tiny blinking light near your Samsung phone's camera isn't a defect—it's your proximity sensor working exactly as designed. Samsung placed this sensor under the display on newer models like the S20 series, unlike older devices where it sat in the bezel. The infrared emitter sends out signals and measures reflected light to detect objects nearby.

During calls, this sensor prevents accidental screen touches from your face and automatically dims the display when the phone reaches your ear. It also works with light sensors to stop unintended activations inside pockets or bags. Some Samsung models, including Galaxy A, Galaxy M, and Galaxy S24 FE/S23 FE, use virtual proximity sensors instead. These software-based alternatives rely on AI algorithms and accelerometers rather than infrared hardware.

Users report mixed results with virtual sensors, suggesting they're less reliable than physical ones. Samsung recommends updating software first, then enabling "Double tap to turn on screen" in Advanced Features if issues persist. Cleaning your screen and running diagnostics through Device Care or Samsung Members can identify faulty hardware.

Removing accessories and restarting may resolve false triggers. The blinking dot represents Samsung's effort to maintain functionality while maximizing screen real estate, though the virtual sensor approach appears to sacrifice reliability for cost savings.