It is best to turn it off after use because it will constantly search for a wifi in range and definitely drain your battery.if u keep WI Fi on does it use up your battery? or should u turn it off after using it?
Yes, it's like any other function that you have running. Just like your battery lasts longer in airplane mode, when it's not connected (or trying to connect to) the AT&T network. It doesn't "kill" your battery--but yeah, it will drain it more than if it were off.i have WiFi in my house and if it stays connected does it kill your battery?