I've noticed that my battery life is draining somewhat faster than seems reasonable...
After 7 hours away from my charger I'm at 36% remaining, and frankly haven't used the phone much today. Two 5 minute calls and a bit of playing with email.
The battery status shows that 'Android OS' is using 43% of the battery at the moment. Next after that is the screen at 19%.
Is that normal? Or have I installed something that is draining away at it? What is the best app to identify the malevolent drainer?
Many thanks in advance!
my "Android OS" is always somewhere around 2-3%. You running stock build? mebby reboot the phone and check again?
Stock build.
Have rebooted and killed most of the apps that came along with the reboot. Will watch it over the rest of the day and see if the problem repeats.
Screen usually 70% Android 2-3%.
Mine was horrible then i saw an app G backup.that I had on auto eating up 40%... changed it to manual and eliminated that and an overheating issue... Wierd.
I have been having issues with battery life also. My cell standby was using 65-85% between charges. It would go down to 20-25% battery life after 7-8 hrs with little to no use. I did a factory reset and everything was great for one day, cell standby dropped to about 4%. I added some apps, recharged overnight, and in the morning after 1 hr battery was down to 80%, cell standby back up to 75%. not sure if it's an app i installed or not. At home i have been using a different micro usb charger, not the stock one. I'm wondering if that could be the cause. I did a 2nd factory wipe this morning and now cell standy is back to 4%. I'm going to only use the OEM charger and only add apps 1 at a time to try and narrow down the cause.
do you have the 3g problem?
my guess is ... if your phone keep switching between 3g/edge or umts/hsdpa
you keep using wireless radio and thus consumes much more power
no, I've never had any 3g problems, other than only getting a max download speed of about .8Mbps.
I called HTC about the high cell standby usage and they suggested - turning screen brightness all the way down, turn off GPS, turn off bluetooth, turn off wifi, etc... If I have to have everything turned off so my battery won't die then what's the point of having an otherwise awesome phone. It's been an hour now since unplugging and cell standby is at 20%, battery life at 98%. I guess we'll see...
Battery issues are almost always due to apps (or services) running, especially ones that are constantly using a data connection.
That's why Apple don't allow the iphone to run anything in the background ;-)
If it was fine after reset and then bad after you added some apps then you know one of them is to blame......
My nexus one has been unplugged for 24 hours now and is at 66% (fairly light use in that time to be fair).
it's possible that android synching could cause usage to spike to those levels, but that shouldn't be happening very often.
I leave syncing on all the time and my phone is easily 14 or 15 hours to get to 20% with what sounds like heavier usage than what konsta is reporting.
I read some guy solved most of the battery issues by turning off GPS. I'm now following this practise after a full charge from completely dead to see how it goes. I normally have to charge once per day, I do use the phone quite a lot, not much for phone calls though, twitter, facebook, sms, tech news etc!
I think that my "Android OS" drain must have been a one-time event (hope so, anyway). After my reboot I'm now up to cell standby as my primary usage. I've spent a fair bit of time in the last few hours in patchy signal areas, so seems fair.
Will see how long it lasts tomorrow.
I agree that the GPS seems to be the biggest battery killer. Completely drained my machine in next to no time when I was playing with Copilot live.
I am actually impressed with the battery life on the n1. I can keep GPS on and use it, playing games on the train and answering emails and calls all day long with seesmic constantly running and easily get through the entire day. If I don't charge it overnight I will be about 15-20% remainig in the morning. I have stock android os on an unlocked n1.
Power drain solved....
Hi every one.
My battery life to was abismal, that was until I read this over on Modaco.
GSM 2G+3G ("WCDMA preferred") drains battery over 5 times faster than exclusive 3G ("WCDMA Only")
Average battery drain / hour when phone is idle with screen off:
1-Standard shipping mode WCDMA prefered, i.e. both 2G and 3G enabled, Wifi off): 10% / hour
2-Alternate WCDMA Only mode, 3G exclusively, no Wifi: 1.7% / hour
So I tried changing the phone settings from WCDMA prefered to WCDMA only. WOW battery life instanly better!!! 3G still works and phone OK.
To do this enter *#*#4636#*#* on phone dial pad, select phone information, then scroll down to selection box, change set preferred network type to WCDMA only. Switch phone to airplane mode, then switch airplane off and watch your battery performance increase by 300% plus...
gadjet said:
Hi every one.
My battery life to was abismal, that was until I read this over on Modaco.
GSM 2G+3G ("WCDMA preferred") drains battery over 5 times faster than exclusive 3G ("WCDMA Only")
Average battery drain / hour when phone is idle with screen off:
1-Standard shipping mode WCDMA prefered, i.e. both 2G and 3G enabled, Wifi off): 10% / hour
2-Alternate WCDMA Only mode, 3G exclusively, no Wifi: 1.7% / hour
So I tried changing the phone settings from WCDMA prefered to WCDMA only. WOW battery life instanly better!!! 3G still works and phone OK.
To do this enter *#*#4636#*#* on phone dial pad, select phone information, then scroll down to selection box, change set preferred network type to WCDMA only. Switch phone to airplane mode, then switch airplane off and watch your battery performance increase by 300% plus...
Click to expand...
Click to collapse
Are you on T-Mobile?
gadjet said:
Hi every one.
My battery life to was abismal, that was until I read this over on Modaco.
GSM 2G+3G ("WCDMA preferred") drains battery over 5 times faster than exclusive 3G ("WCDMA Only")
Average battery drain / hour when phone is idle with screen off:
1-Standard shipping mode WCDMA prefered, i.e. both 2G and 3G enabled, Wifi off): 10% / hour
2-Alternate WCDMA Only mode, 3G exclusively, no Wifi: 1.7% / hour
So I tried changing the phone settings from WCDMA prefered to WCDMA only. WOW battery life instanly better!!! 3G still works and phone OK.
To do this enter *#*#4636#*#* on phone dial pad, select phone information, then scroll down to selection box, change set preferred network type to WCDMA only. Switch phone to airplane mode, then switch airplane off and watch your battery performance increase by 300% plus...
Click to expand...
Click to collapse
Are you on T-Mobile? Do you have a fairly strong 3g. signal ? if one did have a fairly strong 3g signal would this still be advisable?
rockky said:
Are you on T-Mobile? Do you have a fairly strong 3g. signal ? if one did have a fairly strong 3g signal would this still be advisable?
Click to expand...
Click to collapse
Hi rockky.
No I am on Orange, I usually only get a full strength 3G at my works and not usually at home, however since getting a Nexus 1 i now get a limited 3G at home..
after uninstalling mobile defense and city caller id my bat went back to normal.
I noticed pretty good battery improvement when I turned off GPS (only turn it on when I need it).
First of all, I'm doing this guide (wiki[dot]cyanogenmod[dot]com/wiki/Troubleshooting#Battery_recalibration) since I recently rooted and flashed CyanogenMod 7.0.3. One of my questions was this: What's the quickest way to drain my battery? Currently, I have airplane mode off, wifi on, sync on, GPS/Navigation on, and I'm watching a Netflix movie with the screen at the brightest setting. It's been like this for maybe ten minutes and it's still at 100%. Since I'm going to sleep soon, I was hoping it would be quicker to eat up the battery.
Secondly: 'Cell Standby' keeps eating up all my battery. Seeing as how I don't have a cell coverage plan and I always use my phone with airplane mode (with wifi on), why does 'Cell Standby' use so much power?
Anyways, does anyone have any more battery saving options? I wouldn't like to turn off wifi or sync.
harry_seaward said:
First of all, I'm doing this guide (wiki[dot]cyanogenmod[dot]com/wiki/Troubleshooting#Battery_recalibration) since I recently rooted and flashed CyanogenMod 7.0.3. One of my questions was this: What's the quickest way to drain my battery? Currently, I have airplane mode off, wifi on, sync on, GPS/Navigation on, and I'm watching a Netflix movie with the screen at the brightest setting. It's been like this for maybe ten minutes and it's still at 100%. Since I'm going to sleep soon, I was hoping it would be quicker to eat up the battery.
Secondly: 'Cell Standby' keeps eating up all my battery. Seeing as how I don't have a cell coverage plan and I always use my phone with airplane mode (with wifi on), why does 'Cell Standby' use so much power?
Anyways, does anyone have any more battery saving options? I wouldn't like to turn off wifi or sync.
Click to expand...
Click to collapse
Have you tried different radios? also you can overclock and undervolt, those all can make a huge difference in your battery life.
Set you brightness to a low level and turn off auto brightness.
Use a darker colored background,this will normally use less lcd power.
Also GPS can eat up alot of battery.
You may want to change your sync/ push options to update less often.
Not too familiar with the cell standby eating up battery life, normally with airplane mode this should stop the phone from searching for service. also try battery calibration after you install any rom. you can find this in the market.
Hope this was somewhat helpful.
good luck!
Hi, I don't know what to do, I'm running 4.2.1 stock on my 32 3G N7. The tablet cannot go in deep sleep because of constant baseband_xmm_power kernel wakelocks. I tried factory reset, but the problem persists. For example with 5h the screen off, there are >4 hours partial kernel wakelocks.
Same here and I'm sick of it. Sometimes my Nexus manages to enter deep sleep but I still see a significant percentage of that kernel wakelock. It also happens that wifi won't shut off on sleep, and I'm talking about when it truly enters deep sleep, and it's correctly configured.
I have the same problem. Battery life is really poor due to this. My LP core is running at full tilt for at least half the time the screen is off, preventing deep sleep.
I found a suggestion that turning on flight mode and then rebooting might help, but I think the problem recurs pretty quickly if not immediately.
Saw a post that said it's due to the modem switching power levels when radio reception is poor. That would definitely make sense in my case — 3G reception fluctuates a lot at home and I am constantly losing connection. I have removed the SIM and will check it in the morning to see if there's any improvement. (Using BetterBatteryStats).
Hope this bug gets fixed in the next update. Almost thinking I should have got the vanilla wifi model
________________
EDIT: Removing SIM overnight doesn't help. Over the course of 8h screen off, baseband_xmm_power was active for 7h 46m!
I'm having the same problem, only when mobile reception is poor. Unfortunately, my mobile coverage at home is currently near-zero, which makes using my tablet as an alarm clock a dicey proposition unless I plug it in overnight.
I have cyanogenmod 12 euphoria rom installed.. The cell standby is always number one battery draining source.. I have good screen on time but terrible standby time.. The battery goes from 100% to 0 on 7 hours of night.. I turned on airplane mode which caused improvement but still the radio burns through battery although my Sim card slot is broken and i have no sim cards..
Thanks in advance
Well, with airplane mode on, there should be hardly any battery drain. On my previous device I used to turn airplane mode on during the night and had 0 battery drain.
Have you check to see if something is keeping your device from sleeping?
So I noticed something the other day and I need help figuring it out
While the phone is in airplane mode+wifi turned on+sync is on and everything else is on
I managed 2 days of battery life with almost 8 hours screen on time (browsing using Google chrome a lot+ YouTube for about 2 hours+ taking about 50 pics during my trip all synced to Google photos)
When airplane mode is off (data is off as well) connected to WiFi (everything is same when airplane mode is on,except no camera was used)
I can manage 4 hours of screen on time (browsing using chrome+YouTube) and about 8-9 hours total battery life
How can "cell signal?" (not sure what's the correct word for it exactly) use that much battery? Is there any way to optimize it?instead of switching airplane mode all the time?
I heard about signal scanning all the time,so I forced 3g only ,but it doesn't help at all
elixir. said:
How can "cell signal?" (not sure what's the correct word for it exactly) use that much battery?
Click to expand...
Click to collapse
It just does, and if your signal is low it uses even more battery to keep the connection alive.
hi my phone battery is very fast drain in standby
please help to fix it
my rom stock