Why does my wifi turns on and off all the time by itself?

[AC Question]

Recently my wifi automatically on and offs by itself which leads me to not being able to use the Internet

 

[B. Diddy]

Welcome to Android Central! Which phone? Go to Settings>Wi-fi, tap Menu>Advanced, and make sure Wi-fi Scanning is turned off. On Marshmallow phones, you may have to go to Settings>Location, tap Menu>Scanning, and turn it off there.