Database Users

The Xoom has awesome sleep time!

Been too busy w/work to spend time w/my baby. But had time to play with her tonight and just wanted to show how awesome the idle drain is on the Xoom.
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Yeah it is great. I generally lose 0-1% on 8 hours of standby with WiFi on.

yea and yours is stock right? imagine what we can get out of it with more reliable battery saving kernels

It's awesome although I never very high tablet idle because I have a bunch of crap running in the background - GMail, 3 IMAP accounts every 10 mins, Twitter every 15 mins, Facebook every 30 mins, etc etc.
I still get about 8 hours of standby on 10% of battery with WiFi. When I'm on 3G though it drains a lot quicker.

bronxknight28 said:
yea and yours is stock right? imagine what we can get out of it with more reliable battery saving kernels
Click to expand...
Click to collapse
100% stock and not even rooted & yes, my wifi is on 100% of the time!

click on the graph and you will see additional information that will rock your mind.

Why don't you use your Xoom instead of letting it sit idle???

Neo3D said:
100% stock and not even rooted & yes, my wifi is on 100% of the time!
Click to expand...
Click to collapse
when you say wifi on 100% you mean you have the disconnect policy set to never (last option)

z06mike said:
Why don't you use your Xoom instead of letting it sit idle???
Click to expand...
Click to collapse
I laughed.

yea i love it also. If you underclock it like around 912 or 760mhz then you get pretty good battery life for the whole day. If you play any games or watch any videos then you can always go back up
Sent from my Xoom using Tapatalk

I was playing gun bros last night. Played for about an hour but then stopped and got caught up to something else. I didn't quit the game either. I totally forgot I was playing it until recently. The game was on for a whole day. 50% of juice still left
Sent from my Nexus One using XDA App

One thing that caught my eye which seems to not be a problem as it was on my htc incredible is that something (app related) is keeping my xoom awake. For example the xoom batter says its been on for 4 hours and the awake time (under system status) says 4 hours. I couldnt figue out which app was causing this so I did a test to see if this awake time was actually draining battery as it was on my incredible.
In short I charged my battery to 100% before going to bed and restarted xoom to start from 0hours awake and 0hours battery use. Checked it 8 or 9 hours later and saw that my awake time was exactly that of battery use time however my battery read 100% with that much time being awake (by app).
Thus the awake time although drained my incredible does not impact my xoom enough to really care about. Hopefully this may help if anyone else is OCD about awake versus sleep times.

jland22 said:
One thing that caught my eye which seems to not be a problem as it was on my htc incredible is that something (app related) is keeping my xoom awake. For example the xoom batter says its been on for 4 hours and the awake time (under system status) says 4 hours. I couldnt figue out which app was causing this so I did a test to see if this awake time was actually draining battery as it was on my incredible.
In short I charged my battery to 100% before going to bed and restarted xoom to start from 0hours awake and 0hours battery use. Checked it 8 or 9 hours later and saw that my awake time was exactly that of battery use time however my battery read 100% with that much time being awake (by app).
Thus the awake time although drained my incredible does not impact my xoom enough to really care about. Hopefully this may help if anyone else is OCD about awake versus sleep times.
Click to expand...
Click to collapse
IIRC, I read a post somewhere here saying this awake problem was caused by the WeatherBug app (IIRC that is ).

ClydeB1 said:
IIRC, I read a post somewhere here saying this awake problem was caused by the WeatherBug app (IIRC that is ).
Click to expand...
Click to collapse
Yeah I read that as well. I dont have weatherbug though! I dunno what it is, I tried deleting apps and testing and couldnt find the culprit. Seems to not impact the battery whatsoever as I tested it overnight with 100% battery charge and woke up with 100% battery despite being awake all night.
The only thing that stays awake in my running services it seems is my android keyboard so it may be related to that or an app keeping my keyboard awake. All other processes are consistant with the screen on time.

ClydeB1 said:
IIRC, I read a post somewhere here saying this awake problem was caused by the WeatherBug app (IIRC that is ).
Click to expand...
Click to collapse
Weatherbug sure is full of bugs . In fact I used it and deleted it.
Sent from my Xoom using XDA App

It's the latest CNN app, it launches a service which keeps the XOOM awake. It shows up as Android System. If your Android System awake time is high it's CNN.

mobilehavoc said:
It's the latest CNN app, it launches a service which keeps the XOOM awake. It shows up as Android System. If your Android System awake time is high it's CNN.
Click to expand...
Click to collapse
Yep CNN for me too. Its only if u use the widget though it seems. Using the app normally doesn't cause the wakelock.

I'm using Weatherbug on my wifi only Xoom without any problems. I haven't tried the widget, maybe that's where the problem is.

poisike said:
I'm using Weatherbug on my wifi only Xoom without any problems. I haven't tried the widget, maybe that's where the problem is.
Click to expand...
Click to collapse
Yep its the widget problem. It drains battery.
Sent from my Xoom using XDA App

z06mike said:
Why don't you use your Xoom instead of letting it sit idle???
Click to expand...
Click to collapse
cuz i been crazy busy at work taking care of bugs before our release next week! by the time i get home, i just wanna eat shower and go to bed

Battery is draining FAST

im losing around 10 percent an hour on standby and i know im not doing anything different i have my phone setup the way i always have. im running the lastest version of syndicate with the ec05 modem
Edit: I should also mention i have the gingerbread theme currently installed but i doubt that matters...
Sent from my SPH-D700 using XDA App

Sorry to say...but your phone might have aids.

ksweat2292 said:
im losing around 10 percent an hour on standby and i know im not doing anything different i have my phone setup the way i always have. im running the lastest version of syndicate with the ec05 modem
Sent from my SPH-D700 using XDA App
Click to expand...
Click to collapse
Did this all of a sudden happen, or did you just flash or recently change something?

blu9987 said:
Sorry to say...but your phone might have aids.
Click to expand...
Click to collapse
This could be possible

ever since i updated to ec05. i was on the lastest bonsai rom a few days ago before switching to syndicate
Sent from my SPH-D700 using XDA App

Try 2 things toggle airplane and kill all process. Use spare parts to look at partial wake lock that will be a general process of what is not letting the phone sleep.
Sent from my SPH-D700 using XDA App

ksweat2292 said:
ever since i updated to ec05. i was on the lastest bonsai rom a few days ago before switching to syndicate
Sent from my SPH-D700 using XDA App
Click to expand...
Click to collapse
If you haven't calibrated your batter, I would try that.

blu9987 said:
Sorry to say...but your phone might have aids.
Click to expand...
Click to collapse
DUUUUDDDDEEE that ish was too funny!!!!!

cpcormier3 said:
If you haven't calibrated your batter, I would try that.
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+1
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If this guys phone has the HIV, i'm [email protected]#$ed!
I'm losing 10% in 10 minutes! Absolutely ridiculous. I'm on EC05. Auto brightness off. Brightness to the lowest setting. Stock, rooted, removed some bloatware but left DRM stuff.
This is after pulling it off the charger from 100% and a fresh reboot. I just toggled airplane so my TWS was at 21% when I took these screenshots.
EDIT: I've already calibrated my battery after updating from EB13 to EC05 and wiped batt stats.

I dont know about 10% every 10min..but I also noticed battery usage skyrocket in 1.1.0 from 1.0.2..and I didnt even install any software yet or customized anything..its effectively clean rom....
what stands out is standby....im at:
standby: 51%
display: 34%
phone idle: 15%
and I havent even touched the phone at all :/ (you can see that by the huge idle amount)
It used to be like 90% display before...and everything else was under 10%.I even turned off Google Syncing.

jbadboy2007 said:
Try 2 things toggle airplane and kill all process. Use spare parts to look at partial wake lock that will be a general process of what is not letting the phone sleep.
Sent from my SPH-D700 using XDA App
Click to expand...
Click to collapse
Sent from my SPH-D700 using XDA App

I've had sleep issues ever since DK28. The phone will randomly stop sleeping, and will barely last 12 hours on battery with *zero* usage. Sometimes a reboot will fix it for a few hours, then it will just randomly stop sleeping again. I tried everything to fix it, flashed EC05 three times, twice by going back to DI18 with odin and flashing update.zip, and once by flashing the pre-rooted tar from android-central. Didn't even install any apps or anything after the last flash and left pretty much everything stock, still does it. When it's not sleeping, spare parts usually shows a running time of over 70%, even if I've got the phone sitting in my pocket or on my desk all day. There's nothing under partial wake that shows any kind of significant usage. It'll be "awake" for 8 hours, but there's no evidence in spare parts as to what's eating up those 8 hours.
Tried killing DRM service, toggling airplane mode, leaving phone IN airplane mode, wifi/gps/bluetooth disabled, rebooting, clearing dalvik cache, wiping data, and probably some other things I can't remember off the top of my head. The last thing I tried was pulling the battery for 5 or 10 minutes. Oddly enough, it's been trouble-free since then. Probably just a coincidence and it'll stop sleeping any minute now.

I have had the same problem. I think the problem is under sensor usage. The android system is using it a lot of the time.
Sent from my SPH-D700 using XDA App

tatoniss said:
I have had the same problem. I think the problem is under sensor usage. The android system is using it a lot of the time.
Sent from my SPH-D700 using XDA App
Click to expand...
Click to collapse
I was actually just looking at that and see sensor going 5%-10% cpu usage..

This has happened to me a few times since upgrading to SRF 1.1.0.
The phone will get really hot and burn through my battery at an alarming rate.
What I usually do is shut down, pull the battery, and let everything cool and then all goes back to working normally.
Very strange, but at least there's a relatively easy temporary fix.

Recalibrated the accelometer..lets see if that helps..

Are you using the new Telenav GPS app? It downloaded 6 Gigs of data in 5 days on my phone, draining battery like a boss.

nah i only use google nav and i havent needed to use it in a few weeks
Sent from my SPH-D700 using XDA App

Well, after driving for around an hour my phone's battery dropped from a ~30% charge to dead.
Luckily I seem to have been spared the data corruption I often hear about with non-journaled ROMs and power cuts like that (seems to be the only glitch I never get).
Something strange is going on, almost as though the phone is constantly running a benchmark (since it gets rather warm, as well).

Bad battery?

Today I went to use the GPS on my phone and it lasted about 2 min battery still showed at 60% but phone just keeps turning off. When you turn it back on sometimes it shows 50-60% sometimes 1-2% I turned my phone off and let it charge for 4 hours same thing after just a few min on GPS and I can't take a picture with flash at all when it is acting up. The only reason I'm not sure if the battery is the problem is issue looks to be hit and miss right now my phone is taking pictures with flash just fine on battery but I'm not sure how long it will last. My battery is over a year old so I feel that it may be the problem. Has anyone had this problem I don't want to get a new battery just to find out something else is wrong with the phone.

Let me guess:
Two possibilities.
A) gps cable is not plugged correctly so that it might cause an electric jam with other components?
B) a heavy rom sided crash when turning on the gps?
Sent from my Black Ice'd Glacier using XDA App

fosunite said:
Let me guess:
Two possibilities.
A) gps cable is not plugged correctly so that it might cause an electric jam with other components?
B) a heavy rom sided crash when turning on the gps?
Sent from my Black Ice'd Glacier using XDA App
Click to expand...
Click to collapse
Well it is not just the GPS but I have not checked the cable. I'm not in a place that I can feel ok taking the phone apart. The phone turns off when using the camera flash sometimes so I'm 98% sure it is just the battery that has gone bad. I'm waiting for my new battery in the mail and will update. As of right now I can use the phone and GPS but I can't expect to get more then 5min out of it. I was just shocked at how it stopped working overnight.

Well you can try out with the new battery. It is at least safer than opening the phone. Let s put the openphone stuff into the worst case.
Sent from my Black Ice'd Glacier using XDA App

OK so I got my new batteries in from HERE and everything is working right again. The new batteries are both 1700mah and the battery dock/usb charger is great. I still need to cycle both batteries a few times but so far under super load (gps,4g,games,wifi,flashlight, camera all at once for 30+ min) I have not put more then a 30% drain on them.
On the the next question I do feel that my stock battery should have lasted me longer (lasted less then 6 months). That and my problems started out of the blue with no real warning or loss of charge time. I was doing some reading about Lithium-Ion batteries and I'm now sure my nonstop ROM flashing and some of the "safe" overcharge tweaks caused this problem. After every ROM flash I would calibrate my battery by charging over night deleting the bin and then letting the phone die to the point I could not get it to turn on. Come to find out this is VERY BAD for Lithium-Ion batteries. The next thing i did was use the overcharge again VERY BAD because it can lead to build up inside the battery. In fact to get max life out of a Lithium-Ion it should only be charged to around 80%.
Lesson learned only flash ROM's at 100% battery so you have no need to do a battery cal, and never use a overcharge "tweak" unless you want to spend some money / time without your phone as you wait for a new battery. Missed some great pictures of my kids this weekend happy to have the extra battery now.

Take the battery out and look at it's profile. If it seems a bit swollen, replace it. I had a battery that would say like 60% and then seconds later my phone would shut down. Turns out my battery was kaput and had 'popped'. I picked up a used OEM one and a couple cheap ones off ebay. The OEM one, is where it's at. The others were crap even though they claimed 1800 mAh

Dieselboypunker said:
Take the battery out and look at it's profile. If it seems a bit swollen, replace it. I had a battery that would say like 60% and then seconds later my phone would shut down. Turns out my battery was kaput and had 'popped'. I picked up a used OEM one and a couple cheap ones off ebay. The OEM one, is where it's at. The others were crap even though they claimed 1800 mAh
Click to expand...
Click to collapse
I'm very happy with my new ones working great and much longer lasting then stock. And yes my old one is a bit swollen. I had nothing to compare it to at the time so I had no clue.

yup... new battery time
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oak25 said:
yup... new battery time
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Click to collapse
How old is your battery?!?

My battery is 18 months old. I am thinking the reboots are due to the battery. I charge it all night... 100%.. 30 minutes later it reboots at 1% battery. So I will be buying a new battery soon.

oak25 said:
My battery is 18 months old. I am thinking the reboots are due to the battery. I charge it all night... 100%.. 30 minutes later it reboots at 1% battery. So I will be buying a new battery soon.
Click to expand...
Click to collapse
Yeah that is the same thing mine was doing. Good thing they are cheap.

The "all of the sudden" battery fix on ICS

I have been using my s2 only 1 day on GB so i cant really tell you was the battery life good or bad there, but i i have some news for ICS
stock ROM users.
I was actually really depressed by the ICS battery life (i upgraded from GB same day i bought brand new S2), battery life was terrible,
turning on/off syncing, mobile data, gps etc etc helped a bit, but not that much. i still couldent get full day out of it with moderate use.
Again, im on stock 4.0.3 atm.
And then, a miracle.
Let me say right away, i am aware that these types of batterys (i have stock one btw) dont react on this whole "fully discharge then recharge" thing, but i do think now Android ICS as a system does! Cuz it was exactly what i did-i said what the heck doesent hurt to try and i was playing games like crazy when battery was on 10 or less percent so it wld shut down. then, i connected charger and used as normal on charger until it was fully juiced. repeated 3-4 times and what do you know... i now get 50% OR MORE WITH THE SAME BATTERY!
I am not really sure what happend there. Did battery gauge reset? Did ICS "learned" my battery properly? I dont know. All i know is that i am now able to get trough whole day (i get up 7:00AM, go to sleep round 01:00) with only 1 full charge. I dont even bother turning off wifi sometimes when i go out and dont need it.
I have been also reading around the web that some people got the same result. No calibration trys,pulling battery etc etc...just let it go trough few cycles and let system/phone "calibrate by itself".
Not exactly sure if this is a solution, bug, feature or whatever. I just thought it was worth writing to you guys
cheers, loop

why dont u share some screenshots

np mate, but in evening or tomo morning when i come home

Well, you actually shortened your battery life span by draining your battery to nothing, you should probably google what happens when you drain lithium batteries, and how it affects capacity, and not just
dont react on this whole "fully discharge then recharge" thing
Click to expand...
Click to collapse
You probably did reset your fuel gauge as your phone had no power to hold the gage memory, but you could of saved yourself a lot of battery capacity, by using search and finding out how to reset the battery gauge on the Samsung galaxy s2. Hint* search extweaks and Siyah kernel.
Anyway at least other people who read this, hopefully learn and do it all the easiest and battery efficient way and not
I have been also reading around the web that some people got the same result. No calibration trys,pulling battery etc etc...just let it go trough few cycles and let system/phone "calibrate by itself".
Click to expand...
Click to collapse
Hope this helped, and for future reference do not drain lithium batteries, whether it is your phone, laptop, ps3 controller. Try not to get it under 50% for the best efficiency, but the more you drain it to minimum charge the faster it degrades.

Did you uninstall anything? Did you change any settings? Sounds to me like wakelocks that were removed more than ICS "learning" your battery.

Take it like this: i upgraded to ICS over GB and did full wipe. First day i installed lets say 20+ apps that i use. mostly utilities,few games.
In this period of "recovery" i only updated few apps, installed GTAIII and Flipboard.
Let me make this perfeclty clear as i stated in OP and as deniso wrote: i am aware of todays batterys and how do they work. i am not senior android user but i know my way around,so as i stated, i know i dident "FIX" the battery itself. But i still think the main problem here is not the battery itself,its how ICS uses it.
However this:
Try not to get it under 50% for the best efficiency
Click to expand...
Click to collapse
is just... funny. "try not to" ok i get it, but below 50% is when u need your phone the most, should i carry a portable generator with me? no offense.
Please, do not throw rocks at me. I am aware what i wrote, and i am aware that it doesent makes sense with todays batterys and smartphones.
however,i still do have my better battery life, whatever u say or dont say.
Ill make some screenies when i come home.
Ty all for your feedback.

I said TRY not to, I personally use my phone all day and my battery only gets down to about 75% -85% at the end of the day, so it takes nothing special for our phones, unless you do heavy gaming or movie watching all the time.
And what I said, which wasn't throwing rocks at you, is that you probably just reset your fuel gauge as there was a lack of power to the memory chip, and like I said in my first post, Search EXTWEAKS and Siyah kernel as they have that exact function in them which does not require you to drain your battery below critical values or at all.

hello again, just posting screenies that i promised
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(its in croatian,but you can see what is important)
So as i said before. This is roughly really 50% MORE then what i was getting first few days on ICS. now, i dont know still if this is very good or average, but
it gets me trough day for sure. As u can see, i posted "screen on" time, cuz i was not getting even half of that before and i still have 34% left!
The day was filled with 5-6 emails, i watched 4 youtube videos, did cca 29 mins on surfing and cca 30-35mins in plants vs zombies. few sms, few calls.
So, im not playin smart here or anything, i just have more batter with whatever i did, and it makes me happy
Cheers

You getting more battery after 3 days could quite simply be due to the fact that you flashed new firmware and it always takes a few days for the kernel and modem to 'settle in'. You will never get a true indication of battery drain straight after flashing firmware.
And to the guy above who said he can use his phone the whole day and it never falls below 75%, wow!
I would love to know what firmware, kernel/modem combo you're using.
Sent from my GT-I9100 using xda app-developers app

Phone turned off by itself

Hi all
Hope someone can help with this problem.
Tonight my phone just randomly turned off. I wasn't doing anything strange..just texting. I sent a text and placed my phone down. Looked at it and hour and half later and it wasn't responding. I held down power and it powered on but noticed my battery dropped quite a bit.
I'm bone stock 4.2.2, no root and locked boot loader.
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Sent from my Nexus 4 using Tapatalk 2

Mysteries like this one are not uncommon.
Text message couldn't be sent, phone kept re-trying, got hot, turned off?
Signal loss, connection derp, overheating, turned off?
Who knows. I'd lean towards overheating..

If it's only happened once, what's the issue? It could have restarted for a multitude of different reasons but if it's not doing it on a regular basis then it's not really an issue in my eyes.

Mine did this for the first time today after 2 and 1/2 months of flawless performance too. Really weird, wouldn't respond to any buttons,charger, or USB cable. No red flashing LED. Battery was at about 50%. Wasn't doing anything with it beforehand, it was asleep.
After about 15 minutes of nothing, it recognized the charger and booted back up.

Jim Beam5 said:
If it's only happened once, what's the issue? It could have restarted for a multitude of different reasons but if it's not doing it on a regular basis then it's not really an issue in my eyes.
Click to expand...
Click to collapse
I'm more concerned about the battery. Why the sudden drop off from 90% to 70%
Sent from my Nexus 4 using Tapatalk 2

SeraldoBabalu said:
Hi all
Hope someone can help with this problem.
Tonight my phone just randomly turned off. I wasn't doing anything strange..just texting. I sent a text and placed my phone down. Looked at it and hour and half later and it wasn't responding. I held down power and it powered on but noticed my battery dropped quite a bit.
I'm bone stock 4.2.2, no root and locked boot loader.
View attachment 1769700
Sent from my Nexus 4 using Tapatalk 2
Click to expand...
Click to collapse
I think the 4.2.2 OTA may have corrupted the battery stats file for some users.
I had a similar thing happen where it went from 30% then dropped to 2% after a simple reboot.
Based on my usage at that time, I should have had a lot less than 30%.
Now if your phone gets unusually HOT, you have bigger issues and may end up with the RED light of death
See this post for more info:
http://forum.xda-developers.com/showthread.php?t=2166250

SpookyTunes said:
I think the 4.2.2 OTA may have corrupted the battery stats file for some users.
I had a similar thing happen where it went from 30% then dropped to 2% after a simple reboot.
Based on my usage at that time, I should have had a lot less than 30%.
Now if your phone gets unusually HOT, you have bigger issues and may end up with the RED light of death
See this post for more info:
http://forum.xda-developers.com/showthread.php?t=2166250
Click to expand...
Click to collapse
phone gets warm but not hot. usually when i'm watching a video it'll get warm.

My issue was different, no heat or battery issues. Was at about 50% when it blanked out and 48% by the time it came back.

If phone becomes hot, theres a defense mechanism in which our kernel will make phone run at lower clocks which eventually gets our phone into sleep of death. So try one thing. If ever ur phone gets hot, dnt lock the screen and keep it on a cold surface, and once it get cold, press the lock button. See the diff!!
Sent from my Nexus 4 using xda app-developers app

thx everyone. i'll wait it out and see if it happens again.
if it does, i'll flash a fresh stock image.

SeraldoBabalu said:
thx everyone. i'll wait it out and see if it happens again.
if it does, i'll flash a fresh stock image.
Click to expand...
Click to collapse
Hopefully not! If you do, follow the guide in my signature.

just for good measure, i went back to bone stock 4.2.1 and installed the 4.2.2 update when it got pushed through and the same thing happened again. i didn't even install any apps - just what was in the factory google image. i was just lightly texting, locked my phone and looked at it a few mins later and it was off. this time my battery didn't change and i took notice of the temp of the phone and it was cool.
this only happened after the 4.2.2 update as for the couple of months of 4.2.1, i never had this issue. i've only had stock 4.2.2 for a little over a week.
i'm going back to stock 4.2.1 or maybe will try out a custom. if it does this on 4.2.1 stock, it's gotta be a h/w defect but i'm pretty confident it won't.
thx again all for your suggestions and help.