Ditto that. I've seen that on both my current Android and the Palm I had 
previously.

One other thing concerning wireless. We use WPA2 Enterprise. My Droid (HTC 
Incredible) had a credentials storage password. Every reboot required that I 
enter that password before the 802.1X credentials were provided for wireless. 
Continually trying to associate and failing before I entered that password 
would drain my battery quickly. That behavior seems to have changed on one of 
the recent updates.

Mearl

From: The EDUCAUSE Wireless Issues Constituent Group Listserv 
[mailto:[email protected]] On Behalf Of Ethan Sommer
Sent: Monday, July 09, 2012 7:39 AM
To: [email protected]
Subject: Re: [WIRELESS-LAN] Android wifi continually receiving data bursts

My experience would also point to low cellular signals rather than wifi. Ask 
him to turn off wifi for a day and see if battery life improves, my guess is 
that it won't be much better.


On 07/08/2012 10:26 PM, Scott Smith wrote:
I have not seen such an issue, yet.  I have seen that our campus buildings 
"suck" the battery life as the cellular signal levels are very low and in-turn 
the Android device is searching their primary signal carrier all day.  I'm not 
at all dismissing your question or the possibility of this happening, I'm just 
putting out there what I've seen so far in our buildings.  If I get other 
reports I'll let you know.
On Sun, Jul 8, 2012 at 6:12 PM, Wright, Don 
<[email protected]<mailto:[email protected]>> wrote:
      I've heard this same complaint from a user on our campus.  He claims his 
droid lasts all weekend on his home wireless, but runs down in a day on our 
campus.  I'm not sure why this would be, assuming he runs the same apps all the 
time.  My only thought was that his wi-fi driver was actively scanning 
(aggressive roaming) the other access points he would see here looking for 
better signal.  Anyone have any other ideas ?
-
Don Wright
Brown University


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On Tue, Jul 3, 2012 at 5:07 PM, Hurt,Trenton W. 
<[email protected]<mailto:[email protected]>> wrote:
I have started getting complaints from users regarding battery life on android 
devices when connected to our campus wifi.  The issue is being seen when you 
install a type of bandwidth meter app on the device.  The one I use is  android 
status and I look at the network section to see the Rx and Tx statistics.  Once 
connected to wireless the device still receives bursts of traffic, at least 
according to the app on the device.  We are cisco wifi shop and I'm running 
7.2mr1 code on the wlc's.  Has anyone else heard or seen this issue?


I found this post  http://forum.xda-developers.com/showthread.php?t=1738171   
which states...

This is simply because your wifi antenna still "hears" the data going through 
the wireless network on which you are connecter. Even if your phone doesn't 
asks for any data at the moment the traffic there is on the network will still 
be counted by the wifi chip on your phone.

It will be the same on any public network or if you have another phone or a 
computer connecter on the same wireless router and generating traffic.


I have tried to increase the DTIM setting on one of the wlans and it didn't 
help.  Any suggestions?

Thanks
Trent



Trenton Hurt, CWNA, CCNP(W), CCNA(W), CCNA(V), CCNA(R/S)
Wireless Network Administrator
University of Louisville
Phone (502) 852-1513<tel:%28502%29%20852-1513>
FAX (502) 852-1424<tel:%28502%29%20852-1424>
[Description: Description:                            
C:\Users\twhurt01\AppData\Local\Temp\XPgrpwise\IMAGE_19.BMP]

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--

Ethan Sommer

Associate Director of Core Services

Gustavus Technology Services

507-933-7042
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