If your iPhone's sensors aren't working correctly, you may need to calibrate them. Here's how to calibrate an iPhone's brightness and motion sensors.

An overwhelming majority of handheld devices these days have ambient light sensors built into them. A large percentage of TVs and monitors do, too, and that proportion is growing. The sensors allow ...

Shorten the sensor’s detection zone by adjusting the range dial. Start with the dial set to max and turn down until the range is correct. Also, brighten up the night with the best outdoor smart lights ...

To turn on the keyboard light on your Mac computer, press the F6 key, or set it to turn on automatically. Here's how.