Database Users

Battery Draining Bug?

I think I've discovered a bug on the X that's causing battery drain.
I installed Spare Parts and saw my phone had been unplugged for about 12 hours and that my phone was been Running (not sleeping) for 100% of that time.
After being methodical and getting data points after opening various programs, I determined that after I opened any program that accessed the GPS, the phone no longer would go into sleep mode.
To get the phone to start sleeping again, all I have to do is toggle GPS off and then back on again.
It's completely reproducible every time on my phone.
Now, I don't know what kind of effect this will have on battery life, but seems like it probably would have some effect.
If others can test this and see if it affect you at all, it'd be helpful to see if there's a potential major software bug here or if it's just something with my phone.
Easiest way to test is to start with a fresh reboot with GPS toggle on, install Spare Parts, plug in the phone for a second (to reset the counters), let it sit sleeping for a few minutes, then read the Running % in Spare Parts. Should be pretty low. Plug in the phone to reset the counters again. Then start Google Maps or any other program that will activate your GPS. Close that program and then let the phone sit idle for a few minutes. Check Spare Parts running time again and, for me, it's pegged at 100%.
It stays like that until I toggle the GPS off or reboot the phone.
Very curious to see if others get the same results.

lexluthor said:
I think I've discovered a bug on the X that's causing battery drain.
I installed Spare Parts and saw my phone had been unplugged for about 12 hours and that my phone was been Running (not sleeping) for 100% of that time.
Click to expand...
Click to collapse
I'm not trying to flame... but, after 12 hours your phone was unplugged, and still working... battery drain doesn't seem like a huge issue for me based on this information.
I would recommend an app called Tasker. I use it to turn gps off when it's not in use. I open google maps, gps starts. I close maps, gps off. I put my phone into the car mount, bluetooth starts, gps on, pandora on. unplug it, then everything off. I can have the cell radio off at night, but come on every 30 minutes to check for sms, email or whatever. I have Wifi turn on automatically when I get home, based on gps of course, and when I get out of the car, gps turns off and wifi turns on.
It saves a ton of battery for me, and might be something you'd appreciate. I have my phone running on performance mode all the time, and it still lasts all day and has 30+% to spare when I go to sleep. I'm a heavy user. almost 4GB of data this month with no tether.

That's not really the point.
The point is that there's potentially a bug with the phone that's not allowing the phone to go into sleep mode.
Seems like that might be a pretty important thing.

Point blank, the Droid X is one of the only Androids who last more than on day on the same charge! And what you all don't know is that if you use the blk taskbar and services.jar V.8 from teenfaces you will literally double or triple your life!
I have been unplugged for about 7 hrs and still have a sturdy 70%. All this with a normal discharge rate of about 5% every hour! That'd not bad! But then you have ATK set to aggressive... then the batt manager set to smart then cache mate running at full blast clearing caches every half hour. Plus the apps are killed and shut down when te screen ia off! So technically the X is dead till you power it up!
Take a look... I promise many will agree, that is if they did it right and are using V8.
Sent from my DROIDX via Telepathic DLNA.

What in the world is services.jar V.8 from teenfaces?
Ok, so then both of you are saying that the fact that the phone doesn't ever go to sleep once the GPS has been activated (even after the program that did so exists), isn't an issue?
Seems to me that you can only further improve battery life by having the phone sleep when it's not being used.
But who am I to argue I guess.

Seems like you dint understand my previous post. There is mod to change the task bar and shade. Like V8 is the latest with the services.jar replacment. Now how this affected my batt life i don't know, but, it did.
Now i see a lil longer batt life than with the original items.
Sent from my DROIDX via Telepathic DLNA.

this post is hilarious.
homeboy is trying to get bug testers, and people are talking about how to change the color of their taskbar : /

ixobelle said:
this post is hilarious.
homeboy is trying to get bug testers, and people are talking about how to change the color of their taskbar : /
Click to expand...
Click to collapse
Lol yea. Im gonna head home and try what ur saying. I use tasker for turning wifi on and off for maps and the new google places thing (because most of the time im in buildings) but maybe i should use it for gps too. My friend with the evo has his turned off all the time he says its a huge battery drainer. I say how could that be if it only runs when the icon is up. But this might just explain that as well.
Also other logging programs might keep it awak but this one ur suggesting doesn't i take it. Good to keep in mind. Will update later today
Sent from my DROIDX using XDA App

Sorry, I guess I'm lost/confused.
No one really has a concern that this is a potential system problem that's causing excess battery drain?

I do we still don't have an extended battery im very curious to what we can do with the battery life. If this is true id imgine tasker is the way we would go around fixing it. But went we getting 2.2 next week? Maybe that will fix it. Like i said when i get home im going to try what u said when i get home
Sent from my DROIDX using XDA App

Just noticed something, I formated my phone just today. (for some reason i had to activate again. is that normal never had to do that with my WM phone when i would put roms on it and stuff)
During setup it asked if i wanted to share anymous location info to google, which i know the fist time i said yes (actually maybe the guy at verizon said yes for me) in any case it says under it something "will anonymously collect your location data even if a location app isn't running"
which could explain why it stays on when the gps is on
if you can go into your system settings and it's on for you try turning it off and see if then leaving the gps switched on will still keep the phone on.

mavermc said:
Just noticed something, I formated my phone just today. (for some reason i had to activate again. is that normal never had to do that with my WM phone when i would put roms on it and stuff)
During setup it asked if i wanted to share anymous location info to google, which i know the fist time i said yes (actually maybe the guy at verizon said yes for me) in any case it says under it something "will anonymously collect your location data even if a location app isn't running"
.
Click to expand...
Click to collapse
I think that's the option in settings->privacy, which I turned off the other day, so I don't think that's it.

Good find. Seeing the same thing. Repeated your test, and yep, system stays on till gps is bounced.
Certainly doesn't look right. Is it that once satellite fix is established, it's maintained (even if not used)? And on GPS on/off, the fix is lost and the system forgets about GPS till it's actually called?
Next step would be to see how it affects power consumption. Will try to run some more tests later in the day.

Is there an easy way to test power drain? it'll be very interesting to see what effect this is really having.

lexluthor said:
Is there an easy way to test power drain? it'll be very interesting to see what effect this is really having.
Click to expand...
Click to collapse
Unfortunately with the Droid X only showing battery power in 10%, it's not easy to discern small differences without waiting for hours.
I wonder if looking at the voltage would offer more precision. But, not sure how reliable that is. After all, if it was, why wouldn't the 3rd party battery meters use that to show more precise % readings.

exempli_gratia said:
Unfortunately with the Droid X only showing battery power in 10%, it's not easy to discern small differences without waiting for hours.
I wonder if looking at the voltage would offer more precision. But, not sure how reliable that is. After all, if it was, why wouldn't the 3rd party battery meters use that to show more precise % readings.
Click to expand...
Click to collapse
You'd actually have to write an event for every single percent in the Android system for anything to detect the battery much more accurately and Motorola is too lazy to do that. Its only gonna show every 10% because thats what Android was programmed to show.

just an update, i said no to google doing it's data mining off my gps. but then i found in location, when i check "use wifi" it asked me again. My guess is thats how they know where you are when you turn on wifi, because if you want that feature you also have to be used in mining data of where the wifipoints are physically located.
So maybe that has something to do with it.

Saw this on Android Central Yesterday.
I can confirm it, when used with fancy widget. When standard weather app is used, no major power drain. Fancy widget seems to pin the GPS and run it hard the entire time.

hijackerjack said:
You'd actually have to write an event for every single percent in the Android system for anything to detect the battery much more accurately and Motorola is too lazy to do that. Its only gonna show every 10% because thats what Android was programmed to show.
Click to expand...
Click to collapse
I would think that if Android had 1% events some app would take advantage of it (there are certainly plenty of battery monitors in Market). But I don't know of any that show anything other than 10%. The HTC phones do 1%, and the battery widgets on HTC phones show likewise. Must be a Motorola implementation limitation.

Battery drain while idle - "suspend" process

Hello,
When I got my SGS it only ate 2-3% of the battery during the night. Since then I've tried many different firmwares, currently on the latest JM6, and all of them have had a very annoying problem. It eats 8-10% of the battery during night. I haven't changed anything, wifi is "always on" to avoid it eating battery using 3G. Ofcourse I've tried turning it off, too. The funny thing is that using Spare Parts it seems like it's the "suspend" process using a lot of CPU, which I believe it definately shouldn't. Some times after flashing it seems okay and can sleep properly, but then it goes haywire again - without having installed anything since it worked. Anyone else having "suspend" process using a lot of CPU?
To test, install Spare Parts. Plug in the charger, and remove it again to reset stats (Spare Parts uses some system app to show the CPU usage, and its default view is "since last unplugged", very practical). Go to bed. Sleep. Wake up. Start Spare Parts. Select "Battery History". Click "Other usage", select "CPU usage". Wait for half a minute or so (it needs to load data, if you click anything now you won't get CPU time used). Find the "suspend" process. Check how much CPU it has used.
I might add, that this doesn't seem to have anything to do with wake locks, it's something strange in the system itself.

try next time with all unecessary items off
like WiFi, GPS, BT anything that you don't use when you go to sleep

AllGamer said:
try next time with all unecessary items off
like WiFi, GPS, BT anything that you don't use when you go to sleep
Click to expand...
Click to collapse
Thanks, but I've noticed something strange - still checking, but it seems as if I haven't got my SD card inserted, it looks okay...

I use JM5, Wifi Always on, 3G Always on, Auto sync off when unnecessary.
I was working at the polling booths on Election day here in AU, that's from 7:30AM till 11:30PM, I didn't really need to use my phone for anything, but when I got out 16 hours later I noticed that I had only lost about 3-4% battery.
It's pretty good. D:
For the record:
Bluetooth - This only needs to be turned off if there are devices that auto-pair with the phone, such as a bluetooth headset, in which case you probably want it on anyway?
GPS - This does not need to be turned off as it only uses battery when a service is actively requesting a gps fix. For example if you have Maps open it will drain more battery, but it won't on standby unless you are using Location tracking software or otherwise location aware software.
WiFi - Truth to be told, WiFi when connected uses less power than a 3G connection on standby. WiFi does have the potential to use a lot more power than 3G because of the higher speed potential over a local wireless network. In most cases it's pretty safe to have WiFi always on, however it should be noted that when WiFi is NOT connected it will constantly scan for access points to connect to, this process uses power ON TOP of 3G, so it would be wasteful to leave this on unnecessarily unless you were using it for Google Location services via WiFi access points.
3G Data - The only reason this 'uses power' is because it's a always-on connection, you can partially remedy this by giving WiFi always-on priority saving both mobile data quota and some power. 2G uses a lot less power than 3G simply because it uses the GSM chip in the phone, not it's own higher power chip. So switch to 2G if u don't need high speed data, but want always on Push notifications and such. (EDGE is fairly fast, but I only get GPRS and 3G on my carrier. )
Brightness - This phone has a super bright screen, use something in the lower settings, auto brightness at day if you want.

sturmeh said:
I use JM5, Wifi Always on, 3G Always on, Auto sync off when unnecessary.
I was working at the polling booths on Election day here in AU, that's from 7:30AM till 11:30PM, I didn't really need to use my phone for anything, but when I got out 16 hours later I noticed that I had only lost about 3-4% battery.
It's pretty good. D:
For the record:
Bluetooth - This only needs to be turned off if there are devices that auto-pair with the phone, such as a bluetooth headset, in which case you probably want it on anyway?
GPS - This does not need to be turned off as it only uses battery when a service is actively requesting a gps fix. For example if you have Maps open it will drain more battery, but it won't on standby unless you are using Location tracking software or otherwise location aware software.
WiFi - Truth to be told, WiFi when connected uses less power than a 3G connection on standby. WiFi does have the potential to use a lot more power than 3G because of the higher speed potential over a local wireless network. In most cases it's pretty safe to have WiFi always on, however it should be noted that when WiFi is NOT connected it will constantly scan for access points to connect to, this process uses power ON TOP of 3G, so it would be wasteful to leave this on unnecessarily unless you were using it for Google Location services via WiFi access points.
3G Data - The only reason this 'uses power' is because it's a always-on connection, you can partially remedy this by giving WiFi always-on priority saving both mobile data quota and some power. 2G uses a lot less power than 3G simply because it uses the GSM chip in the phone, not it's own higher power chip. So switch to 2G if u don't need high speed data, but want always on Push notifications and such. (EDGE is fairly fast, but I only get GPRS and 3G on my carrier. )
Brightness - This phone has a super bright screen, use something in the lower settings, auto brightness at day if you want.
Click to expand...
Click to collapse
I've got bluetooth off all the time, it's currently running a very new install of JM6, and I haven't installed anything that runs when I don't want it to run. 3G isn't used, as wifi is always on (advanced wifi settings).
It's around 7 hours since I pulled the plug, after having restarted phone after removing SD card, and the suspend process isn't even on the list anymore... I find this quite interesting - it might just be a coincidence, but right now it looks like there is some kind of problem with suspend process when SD card is in... Do you have an "external" SD card in your phone?

ive just flashed JM1 and hate how much power its using... no idea what the problem is, but ive just come off the official JM1 from Kies, and had a big problem so had to flash the first thing i could find. can this really be down to firmware?
i mean im really noticing a difference on standby, before id loose like 3-4% in a whole day of not using it, now it drops 10% in like a few hours...

sensi_ said:
ive just flashed JM1 and hate how much power its using... no idea what the problem is, but ive just come off the official JM1 from Kies, and had a big problem so had to flash the first thing i could find. can this really be down to firmware?
i mean im really noticing a difference on standby, before id loose like 3-4% in a whole day of not using it, now it drops 10% in like a few hours...
Click to expand...
Click to collapse
Do you have "external" SD card?

i do use 16GB class 6 external SD from Transcent

MoWa22,
I had this happen to me last night and (am stock DXJG04) so very interesting. Trying to remember what my battery drain was last night but I think it was around 10-15% and previously I would get 1% if I turned everything off except being able to receive calls.
I always thought these issues were related to wake locks or that the phone just cannot sleep. Something to try is to reboot the phone and check the battery power before going to sleep and see the battery drain over the night. If minimal battery drain, then maybe it is a rogue app which you may have opened/used during the day. If same 8-10% drain, then am guessing some service or inbuilt process is causing issues.
Half the battle is trying to track the CPU hog or rogue app.

Dang. Lost almost 10% again tonight - but actually the "suspend" process almost didn't use any CPU, SD card still not in phone. Using the built-in battery usage thing, it has cell standby on top, phone idle right below. This is really starting to bother me...

Last night while I turned off APN, Wifi, GPS, etc, I left my phone on as 3G only. I've heard the switch between 3G to 2G causes extra battery drain so I had left the phone on as 3G only. I know 2G is lot less of a battery strain but wonder if it affects cell phone standby. Going to leave my phone on 2G tonight.

I have 3G and sync on. I have weather and feed widgets updated every hour. Plus some other widgets and Google Latitude which I know is using cpu time. My drain is about 1 to 1.2% drain per hour of standby. Firmware DJG4.
I think you dont need to bother too much if battery drains 1-2% per hour on standby (this gives you at least 2-4 days if you use the phone very little). Any more than this means you may have some rouge apps/widgets.
The more critical is the usage time (i.e. with screen on). This is usually like 15-20% drop per hour of use.

Been testing a bit again - this night I had a total of approx. 1% battery used in 9 hours. Still without SD card. I inserted the SD card one hour ago, and I've lost 5-6% already - and suspend process is on top of the list again... Definately something weird going on when SD card is inserted! Please, can anyone test with/without SD card and check for differences?

I spotted this thread and read with interest as last night I noticed my power dropped "unreasonably". I've not started any troubleshooting yet but I am curious about the SD card thing.
Have you tried having the SD card in, but unmounted? Does it still suck powere when unmounted?
Obviously unmounting it is a simpler and quicker process than removing the cover and then physically removing the card.
Mark.

Upgraded to the new Froyo today, seems to be without suspend problems even with SD card. Gotta check how much battery it'll eat during the night.

MoWa22 said:
Upgraded to the new Froyo today, seems to be without suspend problems even with SD card. Gotta check how much battery it'll eat during the night.
Click to expand...
Click to collapse
2% drain during the night. Uhm, I like this.

MoWa22 said:
2% drain during the night. Uhm, I like this.
Click to expand...
Click to collapse
How did you manage that? Everything off? auto-sync off? Wifi? 3g? 2g?

I'm on jm5 with Samset 1.9f and for all the time ive had this phone it has only used 2% battery overnight. Exceptional cases were when i used Fancy Widget, it ate up all my battery overnight leaving me with nothing for the next day. Have stopped using it ever since.
Nowadays, my battery drains heavily when screen is on(when im using the phone). Drains roughly about 1% for every 2 mins im using it, but standby time is still great at 2% overnight...

Qazz~ said:
I'm on jm5 with Samset 1.9f and for all the time ive had this phone it has only used 2% battery overnight. Exceptional cases were when i used Fancy Widget, it ate up all my battery overnight leaving me with nothing for the next day. Have stopped using it ever since.
Nowadays, my battery drains heavily when screen is on(when im using the phone). Drains roughly about 1% for every 2 mins im using it, but standby time is still great at 2% overnight...
Click to expand...
Click to collapse
And do you by any chance run without "external" SD card?

Spybreak said:
How did you manage that? Everything off? auto-sync off? Wifi? 3g? 2g?
Click to expand...
Click to collapse
The new Froyo beta JPC. Same settings as always - WiFi always on (which by the way seems to be default setting on JPC). Everything else standard (it won't switch to 3G while using WiFi).

[Q] Battery thread

Hello,
My battery is not so bad, i try CPU master to change frequencies and it works (215-912 Mhz for my first test).
One question:
In parametre / applications / battery:
the GSM !! take around 20 %, is it normal, is there something to do to stop that ?

pilot73 said:
Hello,
My battery is not so bad, i try CPU master to change frequencies and it works (215-912 Mhz for my first test).
One question:
In parametre / applications / battery:
the GSM !! take around 20 %, is it normal, is there something to do to stop that ?
Click to expand...
Click to collapse
I'm assuming you mean the Cell Standby? I'd love to know as well. In fact I think I'm going to ask some Asus people if they're seeing it in their Honeycomb version. Seems like a big thing to overlook by Acer if Asus doensn't have it.
I get great battery mileage as well.

Cell Standy seems to show up along with Tablet Idle (which makes sense) when going into standby or sleep. According to the stats it was taking a huge portion of my battery.
I was only able to get 5-6 hours out of mine, so took it back.

I mentioned this in another thread, but you can disable the cell by enabling airplane mode. When you check it, Wifi will shut down also. But you can re-check wifi and airplane mode will still be on to keep cell from working and draining your battery.
Also, the little airplane mode icon by the status bar goes away after about thirty seconds, if extra icons down there is the type of thing that bothers you.
This will save about 22% of the normal battery life used over 8 hours.

Makes no difference, Cell Standy will still show up and take battery.

I have verified there is no SIM card reader present in case anyone was wondering. Don't attempt to put one in it.
Sent from my A500 using XDA Premium App

i think he is right
acidicvision said:
I mentioned this in another thread, but you can disable the cell by enabling airplane mode. When you check it, Wifi will shut down also. But you can re-check wifi and airplane mode will still be on to keep cell from working and draining your battery.
Also, the little airplane mode icon by the status bar goes away after about thirty seconds, if extra icons down there is the type of thing that bothers you.
This will save about 22% of the normal battery life used over 8 hours.
Click to expand...
Click to collapse
I did the same thing and the battery seems to draining slower

Started playing today at 9am. Replaced charger at about 7.30pm with 14% battery life.
Surfed the net
Played HD and non HD video games.
Watched some YouTube videos
Watched some online tv shows (Simpsons)
Some idle time
Pulse reading
file manipulation

Re-set
Does anyone know is there a way to reset the battery?
________________________________________________________________________
ZTE Blade - Rooted OC 729mh CM7 RC2 V nice
Advent Vega - Rooted OC 1.4gh - Corvus5 rom gorgeous smooth and qqquick
Iconia A500 - Rooted - HComb Sweet

Wonder Strike said:
Makes no difference, Cell Standy will still show up and take battery.
Click to expand...
Click to collapse
Same here. Cell Standby doesn't ever turn off and in Airplane Mode, BT turns on and I don't want that.

id10terrordfw said:
I have verified there is no SIM card reader present in case anyone was wondering. Don't attempt to put one in it.
Sent from my A500 using XDA Premium App
Click to expand...
Click to collapse
Got a URL with pics? I'd like to see.

gammaRascal said:
Same here. Cell Standby doesn't ever turn off and in Airplane Mode, BT turns on and I don't want that.
Click to expand...
Click to collapse
Rooted and removed phone and telephony apks and no cell standby, no problems (so far...)

Bootup said:
Rooted and removed phone and telephony apks and no cell standby, no problems (so far...)
Click to expand...
Click to collapse
Good to know. I'll root soon.

green2droid said:
I did the same thing and the battery seems to draining slower
Click to expand...
Click to collapse
Same thing here. Left wifi on, turned off cell standby. Cell standby still shows up in battery usage, but got noticeably longer batter life.
Definitely saves some battery.

By removing the phone.apk and telephony no more cell standby now. Thanks.

I had cell standby using 30% of my battery at first and then I turned on airplane mode and re-enabled wifi. Since then it is a noticeable improvement. Also, there is a slot next to the sim card for the future LTE feature that has a grey sticker over it.
Sent from my A500 using XDA Premium App

Also as mentioned, rename phone.apk with root explorer or delete at your own risk and there will then be nothing to use the cell radio.
Sent from my A500 using XDA Premium App

I tried using Astro to rename the apks, but getting a permissions error. Is there a free option for doing this?
UPDATED: I also tried Ghost Command and Android Mate...still getting permission errors. I even tried going and renaming the files via terminal. What I'm I doing wrong???
Just as as FYI, I'm trying to rename the files by just putting ".old" at the end of them.
Thanks!

Went ahead and got Root Explorer. That did the trick! Now I'll keep an eye on the battery usage and see what happens.

Are these the ones in /system/app? If not, where are they located?
jappetta99 said:
Also as mentioned, rename phone.apk with root explorer or delete at your own risk and there will then be nothing to use the cell radio.
Sent from my A500 using XDA Premium App
Click to expand...
Click to collapse

Possible solution to the battery drain prob (WiFi only)

This is for the WiFi only A500.
Just noticed that if you install the power control widget (the free one) from the market, and configure one of the buttons as a 2G/3G switch, on pressing it you get to a menu that's not available through Settings (is missing from the WiFi and connections menu). There you have the option to unselect the Data enabled checkbox. I'm not sure yet, but I seem to be getting better battery life (although Cell standby will still show up in Battery use; still, that value is a percent of the total drainage, which seems to be smaller).
Please try it out and let the others know of your results.

Noted Before - Did Not Seem To Resolve Much
Actually many widgets have the property of opening up "hidden" settings, e.g.,
docfreed said:
Wow! I just went into my Beautiful Weather settings and under the "Advanced Panel" you can specify an action for clicking on the time (or weather). When this is done, it provides a large list of action - this list, to the best of my knowledge, doesn't show up anywhere.
Anyway, Mobile Data was checked (yes or on) so I cleared the list (resulting in mobile data being UNCHECKED) and rebooted. Mobile data remained unchecked so I'll watch for a while and report results later.
Click to expand...
Click to collapse

Could be placebo, I agree. Well, no harm done in any way

sure fire fix
Although it has been said that by renaming the phone.apk and telephony.apk you may risk bricking the device during a factory reset, I have renamed both and have seen an incredible increase in battery life.
Currently at six and a half hours of moderate use for music and web with some standby time and have 88% battery left. No cell standby being shown in battery stats either.
Reboots are fine, just don't factory reset without renaming the apk files back.

Installed Free Power Widget from the Market, says its installed but doesnt show in my widget list, strange.

Cell standby is simply terminology for when the tablet is asleep meaning screen off. So I wouldn't start changing it. In all likelihood you have an application that tries to access those two apps and when it doesn't find them it can't run its background process. I bet finding the culprit app would equally fix battery life.
cbotd said:
Although it has been said that by renaming the phone.apk and telephony.apk you may risk bricking the device during a factory reset, I have renamed both and have seen an incredible increase in battery life.
Currently at six and a half hours of moderate use for music and web with some standby time and have 88% battery left. No cell standby being shown in battery stats either.
Reboots are fine, just don't factory reset without renaming the apk files back.
Click to expand...
Click to collapse
Sent from my A500 using Tapatalk

peejayw said:
Installed Free Power Widget from the Market, says its installed but doesnt show in my widget list, strange.
Click to expand...
Click to collapse
I had the same, switch off and reboot made it appear in the list.
In much the same way photos I copied from a portable hdd onto the micro SD didn't show until I had powered off and on again.

Thanks, that did the trick.

@Canadoc: "Cell standby is simply terminology for when the tablet is asleep meaning screen off. So I wouldn't start changing it."
I do not believe this is correct. If this were true, removing Phone.apk and Telephony.apk would not affect battery usage, because the tablet would still use just as much power when the screen is off and it would still list "Cell standby" on the battery usage screen. In actuality, removing these two apps causes Cell Standby to disappear from the battery usage list and decreases actual battery usage. Plus, my "Cell Standby" % on the battery usage screen is highest when I have my tablet awake all day, and lowest on days when I let it go to sleep much of the time. So it must be doing something else in Cell Standby that uses power, probably trying to contact cell towers (in vain) even though it is a wi-fi only device.
A few minutes of Googling reveals that many Android wi-fi only models have the same problem (they try to access cell service even though they have no cell capability) and removing Phone.apk and TelephonyProvider.apk seems to fix the problem for everyone who's tried it. I have rooted my own A500 and removed them and it has given it an extra hour of battery time per full charge. YMMV, and it may someday brick when there's an update or something, but for now it works great. Cell standby was definitely doing something that it is now no longer doing.

I'm not 100% sure if android respects them(more experience on Linux than Android), but couldn't we just remove the exec flag off of the apk and not worry about bricking?
Or possibly set it's owner to system and deny rights to everyone but owner? Would that still allow updates?

I thought anything PRIOR to Honeycomb was made for phone ? ( froyo, gingerbread ...etc )
That info was actually made in press by Google !
So in essence, HC is for tablet ONLY ! why are we still seeing cell standby and phone apk ?
even if you argue because some tablets are 3G models ... 3G is about DATA ... not making a phone call !!! ( imagine bringing a 10" device up to the side of your ears )
there are some 7" tablets that are GSM capable... so, they CAN make GSM calls, and they DON'T use Honeycomb either.
anyone care to enlighten me why here we are with Honeycomb and still have the cellstandby and phone APK ??

UnicornKaz said:
anyone care to enlighten me why here we are with Honeycomb and still have the cellstandby and phone APK ??
Click to expand...
Click to collapse
Because Google are a bloody idiots?

Because hc was built on gingerbread. It wasn't built from nothing.
Sent from my Desire HD using Tapatalk

Question about sleep in Iconia Tab

Hello all,
Trying to find some info about some behaviour my Iconia has.
I love my device. Way more capable than my wife's Ipad and all that. There's only one thing that irks me: battery drain while the device is idle.
I also have a B&N Nook 1st gen (for books) and an EVO 4G. I leave and use the Iconia mostly at home, close to the WiFi. I'll take it out for long trips and such, but it stays close. I have it set up so that the WiFi antenna turns off when the screen does. Low brightness on the screen, will only charge the battery when it's low enough to charge, etc. It stills drains close to 6-8% if I leave it alone a couple of hours.
Earlier today I rooted the device and use Bloatware Freeze to freeze some stuff. Eventually I'll get rid of some of the gunk the tablet has installed. I want to figure out how to shorten that gap. It doesn't make a whole lot of sense to me that the tablet left alone consumes 8% of battery charge! I mean, if nothing can be done then so be it, I'll learn to live with it.
For my money I would bet that there is something hidden in the Iconia's OS build that thinks it is a 3G/4G device. Now, I'm wondering what would happen if I were to take the next (logical) step and put another ROM in it. Would this make a difference? If I can make the battery drain stop at 5% or less, that would make this perfect.
Thx!

citizenklaw said:
Hello all,
Trying to find some info about some behaviour my Iconia has.
I love my device. Way more capable than my wife's Ipad and all that. There's only one thing that irks me: battery drain while the device is idle.
I also have a B&N Nook 1st gen (for books) and an EVO 4G. I leave and use the Iconia mostly at home, close to the WiFi. I'll take it out for long trips and such, but it stays close. I have it set up so that the WiFi antenna turns off when the screen does. Low brightness on the screen, will only charge the battery when it's low enough to charge, etc. It stills drains close to 6-8% if I leave it alone a couple of hours.
Earlier today I rooted the device and use Bloatware Freeze to freeze some stuff. Eventually I'll get rid of some of the gunk the tablet has installed. I want to figure out how to shorten that gap. It doesn't make a whole lot of sense to me that the tablet left alone consumes 8% of battery charge! I mean, if nothing can be done then so be it, I'll learn to live with it.
For my money I would bet that there is something hidden in the Iconia's OS build that thinks it is a 3G/4G device. Now, I'm wondering what would happen if I were to take the next (logical) step and put another ROM in it. Would this make a difference? If I can make the battery drain stop at 5% or less, that would make this perfect.
Thx!
Click to expand...
Click to collapse
I leave my device with airplane mode checked, and then re-check wifi (as airplane mode will initially turn off your wifi). I get no strange programs showing up in battery usage now.

Will certainly try...
I'll try this next time I head out. Will leave her in Airplane Mode and will check the battery level when I come back.
I did disable the GPS and all location settings. I do not need it to know where I am, since I have the EVO for that.

citizenklaw said:
I'll try this next time I head out. Will leave her in Airplane Mode and will check the battery level when I come back.
I did disable the GPS and all location settings. I do not need it to know where I am, since I have the EVO for that.
Click to expand...
Click to collapse
Right on, let us know if that helps ya out

Well I'm glad I came across this. I didn't even think about leaving the GPS on and consuming battery. Also, where did you adjust for your wifi to turn off when the screen goes off?
EDIT: Nevermind, I found it.

I am developing an app that uses bluetooth and I noticed that if I leave bt on my tab will go dead in 2 days, if I turn it off it can stay idle for several days before needing a charge. I leave the wifi on all the time.

citizenklaw said:
Hello all,
Trying to find some info about some behaviour my Iconia has.
I love my device. Way more capable than my wife's Ipad and all that. There's only one thing that irks me: battery drain while the device is idle.
I also have a B&N Nook 1st gen (for books) and an EVO 4G. I leave and use the Iconia mostly at home, close to the WiFi. I'll take it out for long trips and such, but it stays close. I have it set up so that the WiFi antenna turns off when the screen does. Low brightness on the screen, will only charge the battery when it's low enough to charge, etc. It stills drains close to 6-8% if I leave it alone a couple of hours.
Earlier today I rooted the device and use Bloatware Freeze to freeze some stuff. Eventually I'll get rid of some of the gunk the tablet has installed. I want to figure out how to shorten that gap. It doesn't make a whole lot of sense to me that the tablet left alone consumes 8% of battery charge! I mean, if nothing can be done then so be it, I'll learn to live with it.
For my money I would bet that there is something hidden in the Iconia's OS build that thinks it is a 3G/4G device. Now, I'm wondering what would happen if I were to take the next (logical) step and put another ROM in it. Would this make a difference? If I can make the battery drain stop at 5% or less, that would make this perfect.
Thx!
Click to expand...
Click to collapse
Wow I don't even have 8% drain with Wifi on all the time. There maybe something else in the mix. Most of my drain is the screen as I set it to auto and in my home it ramps up brightness most of the time. Is it possible you have a rogue app? Have you tested the tablet 'fresh', ie: after a factory reset with 1 google profile set up?

Neoprimal said:
Wow I don't even have 8% drain with Wifi on all the time. There maybe something else in the mix. Most of my drain is the screen as I set it to auto and in my home it ramps up brightness most of the time. Is it possible you have a rogue app? Have you tested the tablet 'fresh', ie: after a factory reset with 1 google profile set up?
Click to expand...
Click to collapse
This is interesting, on 3.01 & 3.1 I've had zero drain with screen off w/up to 16 hrs. Settings : Wi-Fi disconnect policy never when plugged in, location & security use wireless networks on & gps on. Airplane mode , always off. I can't understand why you folks are having these problems. Hope we find out. Oh & by the way that's not charging.
Forgot to mention I use Juice Defender.

Update
Well, after much tweaking I think I'm somewhere where I feel comfortable. As a disclaimer I don't take the Iconia with me on my daily commute. Again I take my EVO and my Nook with me. The tablet spends the entire time I'm out in the office at home, unused.
I disabled all screen animations and I'm using the tablet on the lowest brightness setting.
I disabled the GPS and all location-related settings.
I rooted the tablet and am using Bloat Freeze to freeze/disable some of the Acer 'junk'.
I put the table in Airplane mode before heading out.
Last night when I went to bed I didn't use it (I was reading a very good book and I did not use the tablet to watch any of my shows). So I put it in airplane mode after I played with the new Google Music app (Impressive!). I went to bed around 11:00 and woke up at 5:00. In this span of time, battery went down by 1%.
Used it this morning to tweet, check a couple of websites, email. Was @ 71% at 7:00AM. Came back close to 7:00PM. Battery was at 67%. Right now (8:50 EDT) it's at 1d 19h 55m on battery @ 59% charge. Heavy usage of TweetCaster, TuneIn Radio, Browser, Market, &c.
Mind you, it was not used for close to 8-9 hours or more. If I were to take it with me the consumption would be more, but then I would probably use Airplane mode when it was not in use. Besides, I can't use it at work b/c the wireless is not compatible.
I'll keep doing some research, but I'm comfortable. I accept the fact that it will drain regardless, since the OS is up. The previous consumption was too much, and I think I can live within the 2% - 4% consumption rate. If it can go down to 1%, though, that would be even better.
Any other ideas welcome.

beautiful Widgets comes with a widget to disable/enable wifi like we're all used to on our phones.
I loaded prime 9.3 today because I wanted to try a 3.2 rom (for GPS and sd-card reasons). On that rom I noticed the 3g settings were visible until I added the line "ro.carrier=wifi-only" to build prop. I was able to see cell standby show up in batt usage.
Not sure if you guys knew it or not but under battery usage you can click on the graph to see a graphical depiction of what hardware used the battery when. If GPS was active when it shouldn't have been you'll see it there.

Interesting...
Are you suggesting that the 3g apk is active on the 3.1 image? I posted this question to a developer in Market that has an app that kills this on the Iconia. Maybe that's the other 2% - 4% I can kill.

Prime is a 3.2 rom. You could try adding that line and rebooting though.

To the stock 3.1 image? Interesting. Any instructions?

You'll need an app like root explorer that will let you mount the /system partition as read/writeable. In the /system directory there will be a build.prop file that you can open with a text editor (root explorer has this feature built in). You'll see many "ro.xxx" lines. At the end of the first group you'll just need to add the line "ro.carrier=wifi-only" without the quotes. Save and exit the file. Reboot tablet. On reboot, it will read the values in build.prop.
On the prime 3.2 rom, the settings for mobile networks are visible without that line added to build prop. I was actually seeing cell standby in the battery usage list. I never saw that on the stock rom. I use a toggle button for the wifi to quickly turn it on/off from the home screen and that keeps wifi from using any battery while sleeping..
I really doubt that GPS is the culprit in your case. Did you click on the battery usage graph to see what hardware was using the battery during the period of sleep?

Also remember
The % charge that the system reports is not always a very accurate indication of how much charge your system actually has - what matters is up time and how long you can go between charges.
Airplane mode is your friend - no real need to disable animation (has nothing to do with idle charge) - the only thing I do is enable airplane mode when away from charger and not using my tab - some of the drain you are reporting could be due to your system scanning for open hotspots.
Also remember all it takes is one poorly coded app to totally screw your battery over - as you are rooted, quite easy to check for apps that relaunch themselves even after closed, apps that want to phone home every 60 seconds - etc.
Would highly recommend you take a close look at any non-stock apps that you have installed.