Why does my Note 5 turn on WiFi at Startup?

[AC Question]

Note 5 turns on WiFi at Startup

Bought 2 Note 5's love them so far at startup one of the Note 5's turns on WiFi the other does not I prefer to turn on WiFi manually I am sure I have missed a setting somewhere in the phone to set WiFi to not start at startup any clues of where to look as it stands I have to turn off the WiFi manually every time I turn the phone on