Does WiFi use much battery when it's not in use?

Does WiFi use much battery when it's not in use? Or does it still drain the battery in the background (by scanning for networks)? Should I turn it off when I'm out and about and using data?

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Pondlife  Dec. 17, 2012 at 16:34

Can use a fair amount depends on device and definition of much battery too.
If you can remember to turn it off you might as well.

CTPAHHIK  Dec. 18, 2012 at 08:34

There is a WiFi sleep/Scan period - how long will WiFi sleep before doing a full scan. If this value is low (30 seconds) you will see significant battery impact. If you have 5 minutes you probably will never notice it. This is not something you can control easily, but it can be changed. In general this will vary from phone to phone, so you would have to test it for yourself or at least find out what is your sleep/re-scan period.


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