Wifi stays on even when screen is black. Just checked and its been on all day...

[Dan Strong1]

As the title suggests, I've noticed battery was just OK, I'm guessing this is sapping all my battery, how do I get it to just come on when I unlock it?

​Thanks

 

[xandros9]

I think if you turn off an option known as "Connected Standby" it will do that. Can't say for sure though, as my old laptop does that my default and I can't do anything about it.

I would poke into the power settings on the desktop.

 

[Marc_SP]

It is by design. It is the same that other tablets like iPad, and most smarphones, do. This way they can get notifications and updates in real time. I don't know if there is an easy way to change this behavior on Surface (like there is on Windows Phone).
Given the size of the battery of a tablet (10-20 times bigger than a phone), leaving wifi "always on" is not such a big drain as you might think.