Working great, but the phone is running hot

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What steps will reproduce the problem?
1. Start Wifi Tether
2. Connect your laptop to G1Tether and use the Internet
3. Phone gets hot after couple of minutes, stays hot, and battery level
keeps dropping rapidly (10% within 15-20 minutes)

What is the expected output? What do you see instead?

What version of the product are you using? On what operating system?
0.90

Please provide any additional information below.
This is truly a great app.  Much better than that other one that has
terrible throughput and is no longer free.  Still, at the rate this app
consumes power, it will only be useful when absolutely necessary.

Original issue reported on code.google.com by adam.ryb...@gmail.com on 28 Feb 2009 at 2:38

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@stevepunchfatkid: and you should calm down a bit.

Original comment by harald....@gmail.com on 30 Jun 2010 at 11:58

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Issue 417 has been merged into this issue.

Original comment by harald....@gmail.com on 1 Jul 2010 at 12:06

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I used to have HTC Touch pro running windows mobile on it. I used to wifi 
tethering via wmrouter and my phone would always got hot and drains battery so 
fast that even charger couldn't keep up. However I cahnged the phone to Touch2 
and it never had any problem. I even changed into new battery thinking battery 
might be issue. However my finding is that it is faulty phone and if it was 
under warranty, i would send it to back to manufacturer. 
Another quick thing you might try to increase battery little bit is to take 
battery cover off and if possible put the battery next to ac vent or so. You 
could also get 1 amp charger instead of stock 500ma charger .

Original comment by jess...@gmail.com on 25 Jul 2010 at 5:39

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This is for Android. And as you can see to my earlier post, my issue has been 
merged into another non relevant one. Wow, great app, but I'm disappointed with 
how you kinda abandoned my issue.

Original comment by stevepun...@gmail.com on 1 Aug 2010 at 7:26

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@stevepunchfatkid:

Dude!

Original comment by davidjam...@gmail.com on 14 Aug 2010 at 9:32

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Droid running FRG22D also gets extremely hot running this even for only a few 
minutes.  I tried to turn down the CPU clock to compensate, but it doesn't help 
much.  I'm concerned that it's overheating the radio because 3G data 
connectivity drops in and out, which is also a real pain.

Original comment by lelyv...@gmail.com on 4 Sep 2010 at 10:03

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G1 running Cyanogen 5 also gets hot.  I'm thinking that because of hardware 
limitations or bad components the phone gets hot.  (cooling it with a frozen 
water bottle now :D) Battery gets eaten really fast (plugged in through usb and 
sometimes it doesn't provide enough power an shuts down).

Original comment by raydar...@gmail.com on 9 Oct 2010 at 3:28

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I am thinking the issue of battery drainage even when being charged is due to 
excessive heat.

The article at:

http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batterie
s 

states that "The speed by which lithium-ion ages is governed by temperature and 
state-of-charge."

Original comment by netman74...@gmail.com on 18 Nov 2010 at 5:23

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My theory is this: the CPU uses the battery as a heat sink thus causing the 
battery to heat up. I notice it most when downloads  are happening.

Original comment by aldude...@gmail.com on 7 May 2011 at 5:28

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I noticed this problem on my Thunderbolt 4G.  I only really use the WiFi tether 
in the 4G areas so I'm not sure if this is caused by that specifically.  
However I do notice that it gets to approximately 120 degrees Fahrenheit even 
when just one device is connected and having a constant stream such as video 
chat.  

Original comment by kellohen...@gmail.com on 20 May 2011 at 4:54

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D2G. Battery drains faster than phone can charge, even though it is plugged in. 
Gets very hot.

Original comment by starrych...@oliveyou.net on 31 May 2011 at 12:08

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Samsung Epic 4G,

WiFi Tether 3.1 beta2 also runs hot. Mobile AP on DI18 2.1 android would run 
worm for hours and not get so hot.

Original comment by zman...@gmail.com on 14 Jul 2011 at 8:02

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I ran mine for 30 minutes last night. Only used quarter battery and did not get 
any hotter than usual like playing games.

samsung fascinate 3.1 beta 2.

Original comment by fredsb...@gmail.com on 3 Aug 2011 at 7:19

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With client failed ACK does ap really need to be always on in low transfer?  
With rare dtim?

Original comment by lfu8b4sk...@spambox.us on 10 Sep 2011 at 4:54

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Is there a cpu throttle that can be tied to a given application cpu use (as 
opposed to out right use)?  And option to root-FC for abusive apps?

Original comment by lfu8b4sk...@spambox.us on 10 Sep 2011 at 4:57

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using the lastest beta and theres a couple of bugs
1.battery drains super quick
2.everytime i turn off tether the phone reboots
those are the two problems i encounter
plus everybody complaining about phone to hot well i bet your most likely 
trying to download movies,stream videos,youtube 1channel,etc  or stuff above 10 
mb so of course it will a phone dont have a internal fan you dont wanna run 
your phone hot though so i suggest to put it in front of a fan while in use i 
put it in front of a fan when i play playstation network for couple of hours 
and phone stays cool 
im using a optimus V v2.2.2 anyone having trouble rooting optimus V v2.2.2 plz 
msg my email nightmare_2_sik@hotmail.com and ill be happy to help its easy as 
1...2...3

Original comment by ecstacyz...@gmail.com on 16 Sep 2011 at 3:30

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if you have the phone plugged in of course it will run hot shurlock
like i said dont run your phone hot it will damage it put it in front of a fan 
and if your charging it still put it in front of a fan because if your 
tethering its draining batter while your charging like if your phone at 30% 
charging and your tethering by the time your done its most likely gonna be at 
10% or so so really your not charging it and by the time your battery turns red 
the connection will slow i recomend to have it fully chared 

Original comment by ecstacyz...@gmail.com on 16 Sep 2011 at 3:37

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Yep, Wifi Tethering drained my battery in well under an hour (maybe 15-30 
min?). The battery was hot, and more importantly, was losing charge even though 
it was plugged in. In the morning, after a night with no download demands, the 
battery was still nearly empty - after 8 hrs of charging!

I'm guessing that the hot battery wouldn't take a charge, but as long as it was 
plugged in, it wouldn't cool sufficiently, either. Sigh.

Now that I think of it, the phone was probably face-down on a wooden surface. 
Semi-insulated, in a way. Back-up (so the battery heat is close to air flow) 
would be better.

--

ecstacyz, it looks like you might have something interesting to say, but with 
all your run-on sentences, it's very hard to read, and no one is likely to 
bother trying to do so as they run through this thread. Just FYI.

Original comment by IAmBr...@gmail.com on 15 Dec 2011 at 3:29

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Yes, Wifi Tethering does drain the battery faster than the phone can charge. It 
seems the only thing I've decided to do with this is make the best out of the 
situation and minimize damage. 
I put my phone on top of an icepack with multiple paper towels. It keeps my 
battery at a nice 50 degrees Fahrenheit and I can use the tether for several 
hours until I have to switch out my ice pack for extended periods of surfing.  
It does die as soon as I unplug it from power though.

LG Optimus V (VirginMobile) on 2.2.2 

Original comment by dhuynh...@gmail.com on 24 Feb 2012 at 6:47

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I believe that the problem has to do with rfi and transmit power.  Basically, 
the wifi and cellphone
are interfering with each other, and each one cranks up its transmit power to 
compensate.
IIRC both interfacces have this capability.

Original comment by jkaid...@gmail.com on 16 Mar 2012 at 12:09

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daddyrich I have samsung galaxy note 2,wifi tether is perfect battery life hook 
up to my desktop 3.0 usb port,while connected to two laptop. Its been one hour 
now and my galaxy note 2 is not hot yet downloads are 47.8 mb  and the uploads 
are 8.84 mb  
and still climbing.faster than comcast internet.suggestion if phone running hot 
just get from freezer ,put smal towel over it and cell phone on top u should be 
fine,but for my phone it has quad core processors that why everthing is 
beautiful. So thank you for wifi tether.Any body have problem let me no maybe i 
could help you thank happy holiday

Original comment by wade.ric...@gmail.com on 31 Dec 2012 at 1:33

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i've had to replace my battery since the tethering cooked it. Got up to 60 
celsius and basically make the battery worthless. Regardless of being able to 
actually keep the phone cool during tethering, how about a simple shutdown 
trigger, based on the temperature sensor rather than a data limit? It would be 
easy to implement and save everyone from the same problem I experienced. Just 
something to think about for the next version...

Original comment by Satisfi...@gmail.com on 6 Aug 2013 at 9:12