You may not always see it, but most iPhones emit a flashing red light from the top of their screens. It's nothing to be ...

Have you ever noticed a tiny blinking light on the screen of your Samsung phone close to the camera? That light indicates that your phone's proximity sensor is being activated, and it's blinking not ...

When you're talking on a modern smartphone, the display will turn off as soon as you bring the handset to your ear. The feature is meant to prevent accidental taps or interactions with the display.