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I previously made a thread regarding low battery life.
After a week of use and more testing, here's what I gathered.
(Note: I have GPS, Bluetooth, Wifi always disabled, brightness lowest)
My phone will completely drain out in 6-7 hours.
I found the culprit: Cell Standby
1.) Cell Standby always uses the most battery, often 60%+.
2.) Phone Idle often follows with 30%+.
So, to verify my theory that the screen isn't the issue, I turned on airplane mode.
I proceeded to watch a 1 hour comedy, and battery life dropped from 60% to 50%.
This is lower battery usage than if it were sleeping with cellphone on.
I then noticed that my signal hasn't been good (provider sucks, no choice, all of em here sucks).
So, I placed my phone on, but asleep inside a locker for 2 hours (no signal).
When I took it out, it was very warm at 40+ C and battery life dropped about 20-30% per hour.
I've tried turning 3G off, turning always-connected off or downgrading 2g.
The result has always been the same. It still sucks bigtime.
It seems like Nexus One also has this problem, anyone notice similar problems?
I've googled and been told that this is "normal", because the phone increases power to secure a signal.
However, I've clearly owned phones and placed them in signal-less lockers prior to this, and trust me when I say most of them drop 5% per hour max.
20-30% per hour is horrible, and clearly the phone is overpowering its components.
There are some certain Radios you can flash to improve how your phone uses power to pick up a signal, Requires root access tho.
Can you please point me to those radios? I've already tried updating my radio to latest.
My phone is already rooted.
My battery is a joke and I have tried many different things. I always have to charge it by around 3pm everyday during week as It will almost die on way home.
I take it of charge at 7.30am by 9.30 it could be down to 86% and then it judt continues to drop by 3 It can be between 60 and 50% if lucky, by time i'm tenmins from my house I get 15% and warnings.
I use basically for txt, some net usage and sometimes playing a game 10 - 20 mins tops and or read ten mins of books.
I have all updates off only manual and screen down low etc - doing my head in!
G2 (HERO!)
choccy31 said:
My battery is a joke and I have tried many different things. I always have to charge it by around 3pm everyday during week as It will almost die on way home.
I take it of charge at 7.30am by 9.30 it could be down to 86% and then it judt continues to drop by 3 It can be between 60 and 50% if lucky, by time i'm tenmins from my house I get 15% and warnings.
I use basically for txt, some net usage and sometimes playing a game 10 - 20 mins tops and or read ten mins of books.
I have all updates off only manual and screen down low etc - doing my head in!
G2 (HERO!)
Click to expand...
Click to collapse
Im facing the same level of battery drain, but i have 3G turned on constantly with updates from facebook every hour twitter updates every 15 mins and mail app every 30 mins. And i mostly use my phone for music and SMS with occasional browsing.
aziz831 said:
Im facing the same level of battery drain, but i have 3G turned on constantly with updates from facebook every hour twitter updates every 15 mins and mail app every 30 mins. And i mostly use my phone for music and SMS with occasional browsing.
Click to expand...
Click to collapse
Strange, I always have 3g on, and still play a lot with my hero (games and such)
Still it survives about 36 hours on 1 battery load. Without 3g it holds out for 72 hours.
Post #1 on the thread below seems to have a working solution (re-interpreted below)
It seems to be something to do with the battery stats and charging via usb through PC instead of via the mains.
You have to clear your battery data when your phone has really really low battery (this is probably the MOST IMPORTANT step) (you can do this through recovery mode in amonRa). Once the battery data is clear, switch back on (before plugging in) and drain the battery so that your phone switches off by itself (playing music loud and switching wifi, data connect etc, etc is suggested in the thread).
Once battery has died, plug in your phone WHILE it is STILL OFF, then when the battery shows green (will probably take longer to charge because this time it is getting a full charge), UNPLUG BEFORE you switch it on. and you should notice the significant difference. - Oh yeah make sure you switch off all those data connections and wifi and all those other things that you used to drain the battery - unless you use some of them of course
EXTRA TIP given on the thread: TIP!! Remeber when changing and flashing new roms to unplug the phone from charge *(i.e. unplug from your PC) (edit Bad4ss) * after you boot!
TO answer LennyUK's Q below ( and so that the next page doesn't start to quickly before this suggestion is read ) I think why it is suggested for the first boot after this process to be done while off is because it is already off because of the drain AND because it will get a clean full charge up for the first time after a battery data wipe. Because while it is on it will be depleting the battery even if it is in a small way - after that you can do it whichever way you want *nudge-nudge-wink-wink-say-no-more*
Source:
http://forum.xda-developers.com/showthread.php?t=647460
I don't see why the same thing cannot be achieved by charging with the phone on, just as long as you don't change between phone being on or off during the charge i.e. if you start charging with the phone on leave it like that the whole time and visa versa
Bad4ss said:
Post #1 on the thread below seems to have a working solution (re-interpreted below)
It seems to be something to do with the battery stats and charging via usb through PC instead of via the mains.
You have to clear your battery data when your phone has really really low battery (this is probably the MOST IMPORTANT step) (you can do this through recovery mode in amonRa). Once the battery data is clear, switch back on (before plugging in) and drain the battery so that your phone switches off by itself (playing music loud and switching wifi, data connect etc, etc is suggested in the thread).
Once battery has died, plug in your phone WHILE it is STILL OFF, then when the battery shows green (will probably take longer to charge because this time it is getting a full charge), UNPLUG BEFORE you switch it on. and you should notice the significant difference. - Oh yeah make sure you switch off all those data connections and wifi and all those other things that you used to drain the battery - unless you use some of them of course
EXTRA TIP given on the thread: TIP!! Remeber when changing and flashing new roms to unplug the phone from charge *(i.e. unplug from your PC) (edit Bad4ss) * after you boot!
TO answer LennyUK's Q below ( and so that the next page doesn't start to quickly before this suggestion is read ) I think why it is suggested for the first boot after this process to be done while off is because it is already off because of the drain AND because it will get a clean full charge up for the first time after a battery data wipe. Because while it is on it will be depleting the battery even if it is in a small way - after that you can do it whichever way you want *nudge-nudge-wink-wink-say-no-more*
Source:
http://forum.xda-developers.com/showthread.php?t=647460
Click to expand...
Click to collapse
Can you do this on non rooted phone? How do I get into recovery mode?
I think the analysis is flawed. I also think the stats information doesn't tell you everything. For example, yesterday I had 60% cell standby, 20% WiFi, 20% phone idle. Consumption was 45% in 24 hours.
Previous to yesterday, I had high battery consumption. So yesterday was a breakthrough but YMMV. I removed the PCSCII and the Mail app (I don't sync with Exchange and I don't sync with a PC as such - I don't run Windows). I also disabled auto task killer. I rebooted without being connected via USB to power or to PC. Suddenly power consumption became similar to Modaco ROMs.
Last night, I also disabled the setCPU application and rebooted. 6% battery consumption in 9 hours. 34% cell standby, 33% WiFi, 33% phone idle. Consumption was 45% in 24 hours.
how have you improved battery usage, ive tried resetting battery stats, draining battery, fully charging, using kimera 1.5 and with no wifi no bluetooth, not using phone in few hours it was down to 63% and in 10mins had dropped to 59%
i had similar battery problems but today i changed radio versions into a different one, now i get almost full signal all the time and battery usage is geatly increased (went down 2% in 4 hours as compared to 10%/hour)
so i suggest finding a radio that give you good reception
immya said:
i had similar battery problems but today i changed radio versions into a different one, now i get almost full signal all the time and battery usage is geatly increased (went down 2% in 4 hours as compared to 10%/hour)
so i suggest finding a radio that give you good reception
Click to expand...
Click to collapse
Which one did you use?
im on tmobile uk, changes radio from
63.18.55.06JU_6.35.09.26 to
63.18.55.06JU_6.35.08.29
made alot of diference
you should ty out diferent radios and find one that gives the best reception, it will be different for different providers and countries
also i did this...
http://forum.xda-developers.com/showthread.php?t=647460
i unplugged my phone from the charger after doing this at 6am, it had 100% charge
its now10:45 pm, i have 44%charge left...its crazy
before i used to run out of juice around 10 hours after i charged my phone, its not been almost 17 hous and i got 45% left
i seriously suggest doing this
immya said:
im on tmobile uk, changes radio from
63.18.55.06JU_6.35.09.26 to
63.18.55.06JU_6.35.08.29
made alot of diference
you should ty out diferent radios and find one that gives the best reception, it will be different for different providers and countries
also i did this...
http://forum.xda-developers.com/showthread.php?t=647460
i unplugged my phone from the charger after doing this at 6am, it had 100% charge
its now10:45 pm, i have 44%charge left...its crazy
before i used to run out of juice around 10 hours after i charged my phone, its not been almost 17 hous and i got 45% left
i seriously suggest doing this
Click to expand...
Click to collapse
I will use that radio too seeing as I too am on T-Mobile in the UK. When you say to use the link and suggest doing it, I take it you mean the "get to 10% -> get to recovery mode -> wipe battery info -> reboot and drain battery 'til off -> charge while off and the take off charger once charged and switch on..
'cos I tried that and still having problems - am using the new Villain 4.0 beta2, so maybe the radio change in combination to this is what will work - I'll try it tonight when I get home.
immya : many thanks i now hove phone back
flashed radio 63.18.55.06_6.35.05.31
and lost 1% over night
previously on LOST
radio 63.18.55.06JU_6.35.09.26 lost 56% overnight
perhaps issue with 2.1 roms is the latest radio and not latest kernal
BTW using sensehero at moment as was trying 1.5 roms to get better battery, and that didnt work.
some one maybe sticky this info , if anymore find it a saviour. will report back after work, mayeven be able to use data syncing again
Just curious what you are seeing under "Time without a signal %" which you find under Settings - About phone - Battery - Battery Use - Cell standby.
I have a Hero that is rooted and running 2.1 and showing 50%.
Thanks
%5. It was %70 before I did the charge in airplane mode trick.
I did the airplane thing too but mines at 0
33% for me. Did airplane mode trick and haven't had a restart since then.
50% here on rooted 2.1 as well.
What's this battery airplane mode trick?
31% after leaving the phone plugged in an not touching it overnight. Up time 68:49:32 and Awake time 16:41:50 if you need that too, as there's been issues of 100% awake time as well. Of course I've done the airplane trick before, and after a restart, it was back to 100%. Then found out that Meebo was the cause, as it was keeping the phone awake connected to all my IM accounts. Turned it off, and no more 100% awake time, and no more problems.
hoban_eris said:
50% here on rooted 2.1 as well.
What's this battery airplane mode trick?
Click to expand...
Click to collapse
So i have found one solution thanks to a thread over at another site....
Seems as if there is some sort of bug with with Cell standby that causes the phone to lose signal which in turns just kills the battery. To verify that your set has the problem, check the Cell standby info in the Battery Use info. If the Time without a signal is higher than 0% (50% seems to be the norm) than you have a problem.
One solution, at the moment, is to follow these steps:
1. Plug in phone charger
2. Put phone in Airplane mode
3. Put phone to sleep for a minute
4. Turn off airplane mode
5. Unplug phone
I can confirm that this works and my Time without a signal is at 0% for over 9 hours now. The battery life is MUCH better and the phone didn't die on me last night while i was sleeping.
theGross1 said:
So i have found one solution thanks to a thread over at another site....
Seems as if there is some sort of bug with with Cell standby that causes the phone to lose signal which in turns just kills the battery. To verify that your set has the problem, check the Cell standby info in the Battery Use info. If the Time without a signal is higher than 0% (50% seems to be the norm) than you have a problem.
One solution, at the moment, is to follow these steps:
1. Plug in phone charger
2. Put phone in Airplane mode
3. Put phone to sleep for a minute
4. Turn off airplane mode
5. Unplug phone
I can confirm that this works and my Time without a signal is at 0% for over 9 hours now. The battery life is MUCH better and the phone didn't die on me last night while i was sleeping.
Click to expand...
Click to collapse
I also just figured this out yesterday afternoon for my phone. Was going to post it this morning. Thanks.
hoban_eris said:
50% here on rooted 2.1 as well.
What's this battery airplane mode trick?
Click to expand...
Click to collapse
I am at 15% after airplane trick...My awake time is 78 hrs and some change so i think its pretty accurate. let the phone battery drain down and then put into airplane mode. Do a full charge and restart phone...then turn airplane mode off.
50%, geeze... doing airplane trick
After implementing the "airplane mode" method, it says my time without signal is 0%.
my show cell standby 12% android system 58% is this normal
yes another.
Is it necessary to drain the battery and do the "fix" or exactly as the quoted text states? I have tried, and my signal strength is a dot and the standby after is now at 23% from 17% right after, is it going to climb from lack of use or is this not resolved?
Your help is appreciated.
I have found that doing the Airplane mode on, sleep, then Airplane mode off will work without having to connect to a charge. The only thing the charge seems to do is reset the cell standby number. This makes sense since the percentage is based on when the phone was last connected.
What will happen is your percent number will keep going down after the "fix" which is what you want. If having a number really bugs you then add the connct in there.
My time without signal was at 50%. After doing the "no connect" it is showing 13% after 3 hours. it was 28% an hour ago.
Ok thats what I was thinking it was, on a bit of a side note, I no longer go to a lock screen when I press the Power button, i went ahead and set the display to something like 30sec but what just happened?
Works for me
I tried this and it works for me. At most i have 5% and by an hour later its at 0%. Thanks for the tip.
Rooted, running 2.1 rom v0.5.4
23% for me.
I had 50% also but had not really noticed any worse battery life.
Just so it's clear,
the airplane trick needs to be done EVERY boot.
If you restart your phone, you have to do it again. Every time.
Is this bug a result of flashing a specific rom or leak, or is it because of a specific radio?
Hi everyone,
I've received my two S2 devices last week. Both are now with Madmacks 1.4 ROM.
However, here my issues:
1) On both phones, they seem to eat battery faster than I digest water. If 3G is on, Juice Plotter says 8-9h runtime. I usually see "Screen" as taking up to 50% usage (although I'm using it on the lowest level of brightness and 30s timeout).
When I turned 3G off, it goes up to 28-30h (in Juice Plotter). However, 3G is extremely important for me. I dont need syncing by the minute, but I need my data synched every 30-40 minutes. I also wish to use whatsup, skype or talkbox (which consume less than 3-4% according to Bat. usage).
Any ideas on why the consumption is so HYSTERIC? (for comparison, on my Nexus, the same config would eat my bat in ~20-24h, definitely not 8-9h). Last night I've lost from 7pm to 1am over 45%!
2) Bluetooth issues. On one of my devices, I paired it with my car. At first it worked great. The second time I used it my car didn't recognize the device although BT was on. When I palyed with my device and tried "pairing" manually eventually the device "froze". Black screen. Can't shut it off. Got heated pretty fast .. 10-15 minutes later I took the batt out. It drained 45% of my battery!!!
It happened again the next day. However, this time, when I got into the car, the car didn't recognize the device. I took it out, noticed its already frozen. Very Hot. Batt drained 35% aprox.
any ideas?
How come S2 isn't crashing software that gets stuck or drains battery while CPU heats up? didn't have a chance to check the application widget and close it myself.
Thank you!
When the app was not used (and not running in the background) I havent used navigon for days.. but battery usage section says it is draining 20% of the battery, sometimes even 30% if display usage is low. How do I shut navigon europe down ? I remember the first time of usage it was okei, it sucked battery while in use and didnt do anything while turned off.. but now its sucks battery even then turned off. yes gps if turned off? Any ideas ?
DZG said:
When the app was not used (and not running in the background) I havent used navigon for days.. but battery usage section says it is draining 20% of the battery, sometimes even 30% if display usage is low. How do I shut navigon europe down ? I remember the first time of usage it was okei, it sucked battery while in use and didnt do anything while turned off.. but now its sucks battery even then turned off. yes gps if turned off? Any ideas ?
Click to expand...
Click to collapse
go 2 manage apps find the same app and clear the data and cache of the same and reboot hope it resolves ur issue
nope it wasnt that. I turned off "floating car data" will see if that helps. but its most likely send them data while navigon is on and not turned off. So if navigon keeps draining my battery while being compleatlely turned off I must say either android or this program sucks
I use Navigon and have never had a problem with any wakelocks/drain/whatever when it isn't in use. I have 'Use internet connection' set to off & 'Use GPS' set to on, 'Floating car data' off.
I just got the S3 and I have the same problem with Navigon.
My S3 finished charging before I went to bed, I turned off wireless,etc and turned on flight mode.
When I woke up in the morning, the battery was at 97%, the Navigon process was taking up most of the battery.
The service is NaviBluetoothServiceApiLevel
Hi, I have currently upgraded my Xperia Neo to CM9. I have been experiencing a bit lesser batter life.
Also when i use CpySpy app it doesnt show the time spent by the processor in the specified frequencies. It always shows 0 for all
states. that is definitely not correct. The system can't be idle when i use right? So i'm wondering is there any issue with CM9 or my phone particularly. Also i have already used CM7 and CpySpy was giving me right numbers. I need help to figure out why my battery drains even when my phone is in idle and why there are no numbers in CpuSpy.
Thanks in advance
I can't guarantee, but cpu usage/phone turning to be hot after a while of use/short battery life is something common with most of androids. On my HTC HD2 battery life is twice as short since I started to use android.
If, after rooting or more likely the case after flashing a new rom, you often have battery reporting errors, and re-calibrating the battery along with some steps I will outline for you below will ensure that your battery is getting a full charge, and the battery reporting accuracy is right on. I run my device in performance mode all the time, and with a CPU overclock of 1.25GHz and various tweaks, I have about a day an a half to a day and a quarter of full runtime from my battery. This is with moderate to heavy usage (calls, emailing, text, gaming, web browsing, etc.) so you should have no problems getting acceptable battery performance after following these steps:
1. Take the case off your device (one of the latter steps involves taking the battery out from the phone while it's plugged in. Make sure your case won't stand in the way.)
2. Install Battery Calibration app from the market
3. Plug in your device to charge while it's on, wait till it gets to a 100%
4. When the charge is 100%, open the BatteryCalibration app and lookup what the charge is in MV while at 100%. Write it down.
My Atrix 2 was showing ~3400MV while at 100%, which is definitely not the maximum capacity.
5. Discharge your device completely until it shuts off.
A good way of doing this quickly is by turning on wifi, and a video player.
6. Without turning on the phone plug it into a wall charger and let it get to 100%
7. When it's at 100%, without unplugging it from the wall charger, take off the battery cover, and take the battery out.
Your phone will "reboot" and show a Missing Battery icon.
8. Without unplugging the phone from the wall charger or turning it on, put the battery back in and wait until the phone recognizes the battery.
9. Your battery should now be recognized by the phone, and showing a charge % significantly lower than 100%.
Mine showed only 5%.
10. Let it sit there charging for 2-3 hours (or more).
My phone wouldn't charge past 10%, but yours might. The numbers don't matter much as the phone is definitely getting additional charge that could have been lost while flashing ROMs, etc.
11. After 2-3 hours (or more), turn the phone on while holding the volume down button and get into CWM.
Do not disconnect it from the charger still!
12. Wipe battery stats in CWM, reboot.
Do not disconnect it from the charger still!
13. When the phone turns on, go into Battery Calibration app again and look up your MV numbers -if you were like me, they should be significantly higher than before. After this whole process I had 4351MV at 100%, comparing to 3400MV before calibration.
Do not disconnect it from the charger still!
14. Before going to sleep - Install Watchdog Task Manager Lite from the market. Go into it's preferences, set CPU threshhold to 20%, check "Include phone processes", check "Monitor phone processes", check "Display all phone processes", set system CPU threshhold to 20% as well.
Do not disconnect it from the charger still!
15. Make sure your wifi and data connections are off. Now finally unplug the phone from the charger.
Go to bed, let your phone sleep too.
16. Success! Next morning check where your battery % is at and if you followed the instructions correctly / got lucky like me, your battery life should be 90% or more.
I went to bed with 98% and woke up to 94%. So, I consider this mission a success.
Sent from my MB865 using xda's premium carrier pigeon service
Apex_Strider said:
If, after rooting or more likely the case after flashing a new rom, you often have battery reporting errors (as mentioned above), and re-calibrating the battery along with some steps I will outline for you below will ensure that your battery is getting a full charge, and the battery reporting accuracy is right on. As far as power cycling, I don't know that it does much good. I run my device in performance mode all the time, and with a CPU overclock of 1.25GHz and various tweaks, I have about a day an a half to a day and a quarter of full runtime from my battery. This is with moderate to heavy usage (calls, emailing, text, gaming, web browsing, etc.) so you should have no problems getting acceptable battery performance after following these steps:
1. Take the case off your device (one of the latter steps involves taking the battery out from the phone while it's plugged in. Make sure your case won't stand in the way.)
2. Install Battery Calibration app from the market
3. Plug in your device to charge while it's on, wait till it gets to a 100%
4. When the charge is 100%, open the BatteryCalibration app and lookup what the charge is in MV while at 100%. Write it down.
My Atrix 2 was showing ~3400MV while at 100%, which is definitely not the maximum capacity.
5. Discharge your device completely until it shuts off.
A good way of doing this quickly is by turning on wifi, and a video player.
6. Without turning on the phone plug it into a wall charger and let it get to 100%
7. When it's at 100%, without unplugging it from the wall charger, take off the battery cover, and take the battery out.
Your phone will "reboot" and show a Missing Battery icon.
8. Without unplugging the phone from the wall charger or turning it on, put the battery back in and wait until the phone recognizes the battery.
9. Your battery should now be recognized by the phone, and showing a charge % significantly lower than 100%.
Mine showed only 5%.
10. Let it sit there charging for 2-3 hours (or more).
My phone wouldn't charge past 10%, but yours might. The numbers don't matter much as the phone is definitely getting additional charge that could have been lost while flashing ROMs, etc.
11. After 2-3 hours (or more), turn the phone on while holding the volume down button and get into CWM.
Do not disconnect it from the charger still!
12. Wipe battery stats in CWM, reboot.
Do not disconnect it from the charger still!
13. When the phone turns on, go into Battery Calibration app again and look up your MV numbers -if you were like me, they should be significantly higher than before. After this whole process I had 4351MV at 100%, comparing to 3400MV before calibration.
Do not disconnect it from the charger still!
14. Before going to sleep - Install Watchdog Task Manager Lite from the market. Go into it's preferences, set CPU threshhold to 20%, check "Include phone processes", check "Monitor phone processes", check "Display all phone processes", set system CPU threshhold to 20% as well.
Do not disconnect it from the charger still!
15. Make sure your wifi and data connections are off. Now finally unplug the phone from the charger.
Go to bed, let your phone sleep too.
16. Success! Next morning check where your battery % is at and if you followed the instructions correctly / got lucky like me, your battery life should be 90% or more.
I went to bed with 98% and woke up to 94%. So, I consider this mission a success.
Sent from my MB865 using xda's premium carrier pigeon service
Click to expand...
Click to collapse
Great, what should be. :good: