Wifi Sharing chewing battery life

alloneword · May 8, 2011

Got my GS2 on Friday. Charged it when I got home to full before turning it on for the first time.

Getting a bit less than 10hrs of battery life, which isn't too bad, but use hasn't been strenuous, so not thrilled.

I looked at the battery usage and WiFi Sharing has been chewing through my battery. When I was first setting up my phone I configured it, as I do use, but haven't since turned it on, or connected to it from my laptop.

When I started writing this new thread I see there is another thread on the Optimus 2x doing the same thing. Is this a bug in Android with Dual Core CPUs?

ronj1986 · May 8, 2011

Wifi Sharing (mobile hotspot) is a battery hog on any Android device. Thats just the reality of a good feature.

pulser_g2 · May 8, 2011

Wifi sharing is a mega power-hog, as it is essentially making a base-station from your phone. So a lot of power is used as the wifi will be in use fairly heavily.

Same on every device. Hero used to get quite warm using wifi tether.

RyanZA · May 8, 2011

That's surprisingly good battery life for leaving wifi sharing on.. a 10 hour wifi hotspot from a phone is about the best you can get. Not even sure if those portable wifi routers get that kind of battery life.

alloneword · May 8, 2011

Yes, I know it can use a huge amount of battery. But I haven't been using it. I configured it (ie, put in my WPA key, the same one I had on my Nexus One) so I could use it, but then turned it off.

I shutdown my phone last night (took out SD card to copy a bunch of music over quickly). Since I turned the phone back on, I haven't even been into the wifi sharing menu and it's used 15% of the battery.

I will try removing the config and see if it crops up again in the list tomorrow.

Cheers, Tim.

Mr_Mjolnir · May 8, 2011

I also have this, but do not use the feature, nor do I start it, but it still keeps appearing.

Any advice?

Swyped from my GT-I9100 using XDA App

RyanZA · May 8, 2011

alloneword said:
Yes, I know it can use a huge amount of battery. But I haven't been using it. I configured it (ie, put in my WPA key, the same one I had on my Nexus One) so I could use it, but then turned it off.

I shutdown my phone last night (took out SD card to copy a bunch of music over quickly). Since I turned the phone back on, I haven't even been into the wifi sharing menu and it's used 15% of the battery.

I will try removing the config and see if it crops up again in the list tomorrow.

Cheers, Tim.

It sounds like you might have left it enabled - mine is disabled and does not use up any battery.

alloneword · May 8, 2011

RyanZA said:
That's surprisingly good battery life for leaving wifi sharing on.. a 10 hour wifi hotspot from a phone is about the best you can get. Not even sure if those portable wifi routers get that kind of battery life.

This is the problem. Wifi sharing is off. I configured it, but it is off. I 'forced exited' it from from the battery usage menu after I saw it, but at some point it started again.

RyanZA · May 8, 2011

alloneword said:
This is the problem. Wifi sharing is off. I configured it, but it is off. I 'forced exited' it from from the battery usage menu after I saw it, but at some point it started again.

Force exit won't do anything, it will just start up again. Make sure the checkbox is disabled. If it is disabled, try enable it and then disable it.

Can't seem to replicate it here - when I disable the checkbox it turns off.

balto · May 8, 2011

The same thing happened to me. I configured the sharing never turned it on and it was killing my battery. I checked a million times that sharing was not active but it made no difference the service was always running. Killing the service didn't work it kept coming back. I did a full hard reset and haven't setup sharing since and it has yet to be an issue.

Kinda sucks as I need this feature. This did not happen in my atrix which is a dual core phone aswell.

Sent from my GT-I9100 using Tapatalk

alloneword · May 8, 2011

Yeah, I will keep an eye on it tomorrow. I wonder if it is a conflict between Kies and wifi sharing.

Thanks for all the replies. Definitely looks like I'm not the only one who has seen it.

Cheers, Tim.

Leggenda · May 8, 2011

Same problem here...

Mr_Mjolnir · May 8, 2011

Never set it up and never plan on using it. Can I freeze/remove it in titanium backup?

Swyped from my GT-I9100 using XDA App

Leggenda · May 8, 2011

Up for this very important 3ad...

vimto25 · May 8, 2011

Its that kies air once connected it starts that wi fi sharing. Best way is to freeze it and many others

Sent from my GT-I9100 using XDA App

simonk83 · May 9, 2011

vimto25 said:
Its that kies air once connected it starts that wi fi sharing. Best way is to freeze it and many others

Sent from my GT-I9100 using XDA App

Yep, I think you're right. I never enabled wifi sharing either, but I have used Kies Air a few times, and then seen Wifi Sharing appear in the Battery Usage stats.

lgkahn · May 9, 2011

same here set it up and not using it but it is sucking up battery .. this is a big problem. this phone isnot ready yet for my daily driver.. think i am going back to my sgs

i was getting 10% usage in about 2 hours.. i normaly get 3-5 % overnight with my sgs

anyway i have read a few threads and froze (makes them unruneable /using titanium backup .
software update
wifi sharing
and wifi sharing manager

i can always re-enable them if i want to tether

i will keep you informed on how this effects battery

i also used autostarts to disable accuweather which kept starting up.. i dont use any weather widgets other that beautiful weather which has its own

alloneword · May 9, 2011

Sitting on 7% battery now. Been going all day, 10.5hrs, and NO Wifi sharing in the battery usage. Didn't turn Wifi tethering on at all today.

Leggenda · May 9, 2011

This morning it happened again ... But unlike yesterday, instead of killing the process I tried to enable and disable wifi hotspot and the process has finished eating cpu and battery!

tomelsmith · May 9, 2011

I have the same problem, both Wi-fi sharing and Wi-fi sharing manager appear in my 'running services' and are consuming a lot of battery power.

I have not enabled wifi tethering, I've tried enabling and disabling, but this has not fixed the problem. I have used Kies air before, but have made sure that this is not running too.

I can force stop wi-fi sharing and wi-fi sharing manager, but they will re-appear as soon as you re-enable wi-fi.

Any idea what this is? or how to stop it?

Wifi Sharing chewing battery life

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