If you are using Facebook social apps for watching videos, reading content and you don't want your friends or everyone to know about your activity, you can turn this off.
Very useful Android feature can turn your Android smartphone into a Wireless hotspot that enables other WiFi devices like laptops or other smartphones to use your Android phone's Intenet connection.
The original photo was taken in 1927 at the Fifth Solvay Conference where the most prominent and outstanding physicists and chemists got together to talk science.
