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Hi all, searched and couldn't find what I was exactly looking for.
when i first got the phone, the battery life was short but since a couple of weeks ago, it's gotten much, much worse. i've had the phone for maybe a month or so.
i'm talking about the battery draining 10% in 30-40 minutes on standby with nothing like bluetooth or wifi on. at least the phone used to hold a charge decently if it was on standby, now it drains like i'm using it even on standby.
what are the greatest factors that affect battery life? when i first got the rom i have now, it wasn't this bad so i don't think it's the rom itself. plus i absolutely hate changing roms (it takes hours to get all my settings back)
some things i thought of:
i could use g-light but i noticed this makes my memory use quite higher and this doesn't do anything for when it's on standby anyway.
how often the accelerometer checks for rotation, right now it was at every 200 millisecond. I've changed it to 750 now, i'll see what effect this has.
same thing for light sensor. right now it's at 500 ms now.
radio. but again it was fine at first with this 1.09.25.23 radio.
anything else?
With my original 900 mAh battery the consumption was about 15% every hour. This was with the data connection always on. Without this on, it would last 2 days at least.
I also loose quite a bit of power when I'm in a bad phone reception area.
But not knowing where the battery consumption is being used up can be very annoying.
Whenever I'm abroad (and thus have all data connections disabled with NODATA) I always get a massive boost to battery life so it could be some process sending/receiving loads of data that you're unaware of? To test that you could install NODATA and kill all the data connections temporarily to see if that helps? Not that that would narrow down what was happening completely but it might help point you in the right direction.
i also suspect it might have something to do with data. what i've noticed is that my emails don't download fully, only the titles download and i think it stays connected while it's 'stuck' trying to download the rest of the messages, i notice this because it says in the menu 'stop send/receive' meaning it's still trying to send/receive. normally, i have it set to check every half hour. but i guess now it's always connected to data... anyone know why it's doing this? (maybe i need to start a new thread as i can't find an answer for this email send/receive problem by searching...)
kill the 3G chip that works for me but be sure the the provider has a GSM network
yup, 3g is turned off. these days the usage is more like 5% used up every hour in standby with email checked every 30 minutes. i guess that's acceptable...
So my battery time isn't horrible but why the heck is cell standby using 40% when time without signal is only 3%?! Doesn't make any sense.. anyway of resolving this?
I'm seeing the same thing, in fact most of the time 'cell standby' is on the top of my battery usage chart. I suspect some of this is because I live in a relatively weak sprint signal area, its shouting pretty loud to get to the tower.
Every once in a while the phone will boot and have service, but time without signal will show 98-100%, I haven't figured this problem out yet (and yes I've done the GSM/CDMA switch in the test menu).
If you don't want your phone to go into standby, use it more.
abcdfv said:
If you don't want your phone to go into standby, use it more.
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BAAAHHHAHAHAHAHAHA
Good one
Look guys, the battery usage is always going to total between 99% and 101%
This is not an indication of how much or fast your battery is being used, it is a reflection of how the amount of battery used IS BEING USED
Like adcdfv said, and he's absolutely right, if you want to see your cell standby percentage decrease then make more phone calls.
But there's no reason to do that.
Thank you, Thank you.
lawl.
I've done a lot of reading on this and everyone seems to say that Cell Standby has nothing to do with phone use. I use my phone all day to text and randomly use it to browse. Either way my phone is "in use" more or less all day.
And I did that same "fix" in the Test menu that Fird spoke of. I do not live in an area with a weak signal, either. Most of the time I'm getting 3+ bars..
D3FAULT said:
lawl.
I've done a lot of reading on this and everyone seems to say that Cell Standby has nothing to do with phone use. I use my phone all day to text and randomly use it to browse. Either way my phone is "in use" more or less all day.
And I did that same "fix" in the Test menu that Fird spoke of. I do not live in an area with a weak signal, either. Most of the time I'm getting 3+ bars..
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Having a high cell standby is good. It means that the radio is going to sleep properly. It's the Time Without Signal that you'd want to worry about, but with the latest ROMs it's no longer an issue.
I know this is an old thread and it's for a diffrent phone model, but i've been searching the web for the last hour and this thread is the closest one i've found to what i'm experiencing. I have an LG optimus one phone using knzo's Void Forever(2.3.4 based on CM) and the cell standby battery usege is 37% with only 1% time without signal. Can anybody tell me why this is happening?
did you read the previous posts?
Yes i did, and i don't think it's normal to have a high battery usage if TWS is 1%.
Raca_teo said:
Yes i did, and i don't think it's normal to have a high battery usage if TWS is 1%.
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What that means is cell standby is 40% or so TOTAL. It will always add up to around 100% no matter what. Your phone is fine.
There is a lot of conflicting info about Wifi vs 3g.
Which is better to use in term of saving battery?
Does Signal strength of either affect battery life?
IF using wifi, should you have it to always on ( when in wifi zone of course) or should you have it set to sleep when screens off?
I've done testing on that and I've noticed that when using the phone in long intervals, its better to disable connections but when using the phone in frequent bursts it's better to just leave it on. But this is when you are in wifi range the entire time.
Sent from my GT-I9000 using XDA App
I typically have my wifi (and 3g) disable itself when the screen goes off. It seems to restore very quickly. I use Juice Defender (in market) to manage this, which I believe does a pretty good job improving battery life.
wbcollins said:
I typically have my wifi (and 3g) disable itself when the screen goes off. It seems to restore very quickly. I use Juice Defender (in market) to manage this, which I believe does a pretty good job improving battery life.
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Completely agree, some people say juice defender drains your battery, but don't believe them haha
Sent from my GT-I9000 using XDA App
with the whole jD controversy. I'm assuming it has to do with how often the phone is coming out of sleep. If your using your phone every 5 or ten minuets a day then JD probably is going to use more battery then not having it vs lets say you let your phone sleep for half an hour or hours at a time...
Turning a car on and off ( im assuming) takes more gas then letting it run for a few minuets ( correct me if im wrong, but its just an analogy ;] ) but leaving your car run for a hour because your going to use it ina bit isnt effective at all.
Agreed that turning off networking when not needed (Wifi or 3g) will help battery life.
Signal strength of 3G and Wifi will impact battery life, as both protocols will adjust the power when the signal strength is high - low. Your phone will also crank up the power when the signal for basic voice service is weak to keep you connected.
I think over the course of a day at work, juice defender pays off. You can use it in lots of different ways, though the interface is a little clumsy. It also helps me, with help from juice plotter, to determine if my data connections are indeed staying off when I want them to or consuming more energy than they should. When my phone is in my pocket, I don't want it doing much.
can anyone get into more detail about the question at hand?
as in what is better then what .
2 wifi bars better then 2 3g bars?
which uses LESS power ?
IMO, i would say wifi uses less power since the signal doesn't need to travel far to get to your access point vs a 3G signal that needs to go a mile to get to the cell tower. But I'm not an electrical engineer so take it for what it's worth. I leave wifi enabled and use JuiceDefender to turn it on and off as needed. I'm more concerned about data usage since for me wifi is unlimited and 3G is not.
most ISPs limit Bandwidth to 250GB a month. so its not unlimited... so try to stay under that ;]
My experience, turn off wifi is better for bettery life. The battery level almost constant when the wifi is off. The level drop about 2-4% Per hours if wifi is on.
Sent from my cappy.
If you leave wifi on when you're not connected, it drains a lot of battery.
Sent from my SAMSUNG-SGH-I897 using Tapatalk
Anyone notice a change in their battery life in the past few days? My girlfriend and I both are going through our batteries in just over half a day with no use. It's like the phone isn't sleeping. Looking at battery use Display is using all of the battery. I'm running CM7.0.3 and she's on stock. Looking at mine right now the phone has been on battery for 1 hour 34 minutes, and Display is taking 57% of the battery and I'm down to 84% battery.
Yes! I've had my N1 since January 2010. I stayed stock until recently when I installed CM 7.1 RC1 shortly after it was released. Battery life had always been great, both stock and under CM7, especially with SS4N1. Then, a few days ago it just fell off a cliff. I now get only about 7-8 hours, even with little to no usage. Before I'd barely lose anything if the phone wasn't being used (a percent every couple hours).
Now the Nexus One Battery Calibrator application shows a drain of ~200 mA or more constantly.
I've been tearing my hair out for the last few days, uninstalling apps right and left, trying in vain to figure out what's causing this. I even considered a full wipe and reinstall of CM 7, thinking that some system setting somewhere had gotten horked.
I've always had WiFi set to never sleep, since I'm usually either at work or home. I've also had preferred network type (*#*#4636#*#* -> Phone Info) set to "GSM auto (PRL)" for months.
I've not made any other changes I can think of that would've had such a drastic impact on power consumption. I didn't track all the app updates that happened around the time it started, so I suppose it could be one of those. But I've uninstalled just about everything and it's still happening.
I have the same issue! Just in the past week or so. I have about 50% battery then a hour or so later it's dead! I was going to get a new battery today but maybe it's a CM7 issue. I use the nightly as soon as they hit the mirror.
An update on this... There may be a big issue going on with T-Mobile or some recent update:
http://www.tmonews.com/2011/07/t-mobile-g2-users-suddenly-suffering-from-huge-battery-loss/
Looks like other users on different phones have the same issue!
Thanks for that article, Lost Dog. Makes me feel a bit better. At least I know I'm not just going nuts.
My phone still has increased battery drain even if I put it in airplane mode though. It helps, but it's still much faster than before. This makes me really puzzled as to what the cause could be. How could the cell network still be causing increased drain if the phone's completely disconnected from it? Some sort of configuration information it received that persists even after the cell radio is turned off? EDIT: I may be wrong on this one, see below.
Last night I tried a complete wipe (using Temasek's full format "Format-signed.zip" first), and re-installed CM7.1 RC1 completely fresh. I installed only the minimal Google applications and a couple crucial tools (my password safe app). However, I'm still getting the same quick battery drain today.
I hope we (or T-Moblie) can figure out how to fix this. It really cripples my phone as a useful tool to have such short life!
EDIT: I'm going to try a workaround I've seen mentioned in comments on the TMoNews and Phandroid articles about this: limiting the cellular connection to 2G/EDGE only. It seems to have made a significant difference so far. I may have been incorrect then about airplane mode not having an impact. I'd only been checking current drain with the N1 Battery Calibrator app, and never left it in airplane mode for long. Anyway, I'll post back later this afternoon with results.
Ok, so switching to 2G-only for the cellular connection seems to have made a HUGE difference. The drain rate seems to be back at around what I'd expect. Everything else I left exactly the same (WiFi on, GPS enabled, same applications, etc.)
So, I'm starting to suspect something may be up with T-Mobile's 3G/3G+ service in some areas that's preventing phones from idling properly.
Anyone else want to give it a try?
Interesting, I'll switch over to 2G only and see how that affects my phone.
I've gone as far as wiping everything and that didn't help so if it really is a t-mobile issue then that would shed some light on the situation.
I see the same trend when switching to 2G only. Very steep power usage with 3G then a dramatic decrease in the discharge slope in 2G.
T-Mobile has an issue. The trick will be getting someone there to listen.
Sent from my Nexus One using XDA App
Here is my screenshot. You can clearly see when I turned on 3G. Dramatic difference. Looking on the T-Mobile forum there are many people seeing the same issue but there's mostly finger pointing and speculation as to the cause.
nir0th said:
Anyone notice a change in their battery life in the past few days? My girlfriend and I both are going through our batteries in just over half a day with no use. It's like the phone isn't sleeping. Looking at battery use Display is using all of the battery. I'm running CM7.0.3 and she's on stock. Looking at mine right now the phone has been on battery for 1 hour 34 minutes, and Display is taking 57% of the battery and I'm down to 84% battery.
Click to expand...
Click to collapse
I also got the same rapid battery drain since last Wednesday. At that time, I thought there may be a hardware/battery issue for my nexus one. To test this, I switched my rom from CM7 back to GB stock. After a few updates for the GB stock and used it for a day, same battery drain happened. So, I changed to use another backup battery yesterday. It did not help also. I thought it may be a real hardware issue.
Then, I found this thread and research a bit in the web. I found out it could be either caused by tmobile or google map updates. I first uninstall google map and reinstall the new version right from the market again. I also switch off 3G as well. No rapid battery drain for the entire day. The battery runs normally. When I came back home today, I turned on 3G, let it for a couple of hours, checked a couple of emails and received a 20min phone call. Everything seems to work fine. No noticeable rapid battery drain was observed. My conclusion so far is: this is caused by google map 5.8 update.
Try to uninstall it and reinstall the google map from the market to see if it helps.
Good luck.
ricky9237 said:
I also got the same rapid battery drain since last Wednesday. At that time, I thought there may be a hardware/battery issue for my nexus one. To test this, I switched my rom from CM7 back to GB stock. After a few updates for the GB stock and used it for a day, same battery drain happened. So, I changed to use another backup battery yesterday. It did not help also. I thought it may be a real hardware issue.
Then, I found this thread and research a bit in the web. I found out it could be either caused by tmobile or google map updates. I first uninstall google map and reinstall the new version right from the market again. I also switch off 3G as well. No rapid battery drain for the entire day. The battery runs normally. When I came back home today, I turned on 3G, let it for a couple of hours, checked a couple of emails and received a 20min phone call. Everything seems to work fine. No noticeable rapid battery drain was observed. My conclusion so far is: this is caused by google map 5.8 update.
Try to uninstall it and reinstall the google map from the market to see if it helps.
Good luck.
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Click to collapse
Well, I'm willing to give it a try, but I'm skeptical. If it were the Maps 5.8 application that was preventing the phone from idling correctly, or transmitting tons of data, wouldn't we expect it to happen regardless of whether the phone was using the 2G or 3G radio connection? Sure, there might be a slight difference in the drain rate, but we'd still expect to see it in both cases. And yet the accelerated drain is alleviated completely by using only 2G. I have the Maps 5.8 application and can fix the problem by using 2G only. That indicates to me it's not an issue with the application.
I'll try uninstalling Maps tomorrow (I'm using CyanogenMod, so it's possible to remove it completely). Then I'll put the phone back on 3G and report back on what happens.
I've been experiencing similar battery issues the past week or so too. It looks like turning on 2G only seems to fix it, but what I don't get is why I'm still getting horrible battery life?
I have tasker auto turn off my 3G all together whenever my screen is turned off, and yet I leave my phone on my desk untouched all day and I end up at 40% when I get off work.
Wouldn't turning off 3G via Tasker be the same (or close to it) as turning on 2G only in the settings?
Hope t-mobile gets this worked out pretty soon!!
Glad I saw this thread. My wife and I both have N1s and have each been noticing unusually fast battery drain just in the last 3-4 days.
Last night I charged both phones to the same percentage, turned off 3G on hers and let them both sleep for a while. The phones are configured pretty similarly (stock, latest Maps installed, similar push settings etc). After about an hour and a half, my phone had lost 11% of its charge and hers had only lost 2%. That's enough of a delta for me to point to the 3G usage as the culprit. I guess I will be leaving my phone on 2G when I'm not using it if I am going to be away from a charger for a while.
It's NOT the Google Maps update.
Well, I did my experiment yesterday to rule out the Google Maps 5.8 update as the cause of this issue.
I'm running CyanogenMod so it's possible for me to uninstall Google Maps completely, not just the updates. I did so on Saturday night. Still set to 2G only, I removed my phone from the charger Sunday morning. A few hours later I enabled 3G. Later that afternoon I turned 3G off again.
I think the screenshot speaks for itself. Again, this is without Google Maps installed at all.
I asked around this weekend, and my friend's wife (also here in Portland, OR) is experiencing the same issue on her G1 on T-Mobile. Reading online I've heard about the problem affecting the MyTouch 3G, the G2, and many here with the Nexus One. The common elements seem to be: T-Mobile 3G service, particular models of phones, and some particular geographic areas.
Bottom line (IMHO): T-Mobile has a problem with the configuration of their 3G service in some areas, and it's preventing many phones from being able to idle/sleep properly, resulting in huge battery drain.
Here's mine, I posted this several days ago in the TMONEWS thread.
keenerb said:
Here's mine, I posted this several days ago in the TMONEWS thread.
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That's interesting. Even locking the phone to 2G/EDGE didn't have an impact? (not a Nexus One there it appears, what model?)
How did you go about disabling the 3G connection? I'm not sure if there are multiple ways to do it, but I used:
Settings -> Wireless Networks -> Mobile Networks -> Use only 2G networks
Really strange that even pulling the SIM didn't seem to make a difference. Or maybe that's not the same as turning off the cell radio entirely? Perhaps the issue is lower-level, like the radio constantly polling the tower or something even in the absence of being able to successfully register on the network for active use.
Does enabling airplane mode fix the drain issue for you?
Deliamber said:
That's interesting. Even locking the phone to 2G/EDGE didn't have an impact? (not a Nexus One there it appears, what model?)
How did you go about disabling the 3G connection? I'm not sure if there are multiple ways to do it, but I used:
Settings -> Wireless Networks -> Mobile Networks -> Use only 2G networks
Really strange that even pulling the SIM didn't seem to make a difference. Or maybe that's not the same as turning off the cell radio entirely? Perhaps the issue is lower-level, like the radio constantly polling the tower or something even in the absence of being able to successfully register on the network for active use.
Does enabling airplane mode fix the drain issue for you?
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Click to collapse
This is a G2.
2G has been much better than 3g, but still probably only 3/4 of my former battery life, optimistically. I checked "Use 2g networks only", same as everyone else. The graph above is a little misleading, since I really saw better battery life, that initial flat and quick drop actually averages out to "decent", rather than "horrific.
At the "Pulled SIM and SD card" mark I re-enabled 3g, so the drain afterwards is still 3g related.
Pulling the SIM doesn't disconnect it from the radio tower, you can still make emergency calls/etc. so it has to maintain a connection I suppose.
Twice I hard-reset the phone, pulled out SD and SIM, and still had huge huge battery drain. Powertutor said IDLE draw was 1437mw on average, no SIM, no WIFI, just sitting there on my desk.
In Airplane mode it'll last for days...
Wannagotopopeyes said:
I've been experiencing similar battery issues the past week or so too. It looks like turning on 2G only seems to fix it, but what I don't get is why I'm still getting horrible battery life?
I have tasker auto turn off my 3G all together whenever my screen is turned off, and yet I leave my phone on my desk untouched all day and I end up at 40% when I get off work.
Wouldn't turning off 3G via Tasker be the same (or close to it) as turning on 2G only in the settings?
Hope t-mobile gets this worked out pretty soon!!
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Click to collapse
I'm not familiar with Tasker. However, maybe it's just disabling cellular data use, not actually disabling the 3G radio? From what we've seen it appears the problem is very low-level, perhaps something to do with basic communication/negotiation between the cell radio in the phone and the towers, as there's no indication of particular application activity or significant data transmission that the Android OS is aware of.
In the T-Mobile support thread there are reports that T-Mobile is now acknowledging there's an issue with changes to their HSPA+ network in some areas.
I've had 3G off all day and my battery life is back to normal. I'm at 87% after at least 6 hours on battery. Yesterday I was down to less than 50% by this time. Luckily, I am able to be on Wifi at work so I don't have to deal with EDGE speeds, which make the Baby Jesus cry.
deliamber, you probably noticed this already but I'm also in the Portland market. It's gotta be a network issue.
I'm having the same issue on my N1 (I'm around the Portland area myself)
I did everything as well, 2g is the only thing that saves me..
Can't wait for a fix!
I was wondering if the battery would be good if it was used without a sim card and all the cellular features? I'm considering this watch because of the design. It does have a huge 570mah battery and I wouldnt use its cellular features. Thanks
anees167 said:
I was wondering if the battery would be good if it was used without a sim card and all the cellular features? I'm considering this watch because of the design. It does have a huge 570mah battery and I wouldnt use its cellular features. Thanks
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I lose 3-4% an hour with cellular off and paired by bluetooth.
mward1995 said:
I lose 3-4% an hour with cellular off and paired by bluetooth.
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so it seems there isnt much of a difference compared to my sony smartwatch 3 which i get 2 to 3% loss an hour and it has a smaller battery at 400mah. I'm guessing probably that cellular hardware modules are draining the power, even though its not being used. it would be great to see the same watch without cellular function and same large battery. thanks
mward1995 said:
I lose 3-4% an hour with cellular off and paired by bluetooth.
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By cellular off, do you have it in airplane mode or just left the SIM out and cellular set to automatic? I have mine in airplane right now, figuring that would save more battery, because I couldn't find a way to change cellular from "automatic" to "off" unless it was bugged or something.
Nitemare3219 said:
By cellular off, do you have it in airplane mode or just left the SIM out and cellular set to automatic? I have mine in airplane right now, figuring that would save more battery, because I couldn't find a way to change cellular from "automatic" to "off" unless it was bugged or something.
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I just turn cellular off. When I leave the phone behind I turn cellular to automatic to activate the SIM. When paired by bluetooth I just toggle cellular to off. Occasionally when I go out of bt range cellular will switch back to automatic on it's own. Most of the time mine will stay off. I never use airplane mode.
mward1995 said:
I just turn cellular off. When I leave the phone behind I turn cellular to automatic to activate the SIM. When paired by bluetooth I just toggle cellular to off. Occasionally when I go out of bt range cellular will switch back to automatic on it's own. Most of the time mine will stay off. I never use airplane mode.
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I was able to turn off cellular without putting on Airplane mode after restarting the watch.
I used it heavily this weekend for GPS navigation, tracking on a 5K, notifications, phone calls (via BT), and ambient display always on. The watch never went below 50% during a single day of fairly heavy use. With the display off, I imagine it could get 2.5-3 days easily. 2 days should be do-able with the display always on, but I turn it off at night just to combat any chance of screen burn since we don't know how well this P-OLED will handle it.
Today my battery is at 98% after about 8 hours of use.
I get email notifications, etc. This is with cellular radio and wifi off.
It shows remaining battery of 3 days.
tech_head said:
Today my battery is at 98% after about 8 hours of use.
I get email notifications, etc. This is with cellular radio and wifi off.
It shows remaining battery of 3 days.
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That's impossible. Even if you disable the always on display. Your watch just isn't reporting the battery correctly. Might take a few cycles to get the battery level settled in. And if nothing else, I have noticed mine stays above 90% for awhile then drops off quicker.
You guys are doing much better than I am. I can take the watch off the charger, goto the office and be at 90% in less than an hour with LTE on. I can't get more than 4 hours with LTE on on this watch. I think it has to do with crappy signal strength, but what do I know? I just leave cellular turned off. Taked to LG and might send them the watch back to take a look at it.
rfreeman11 said:
You guys are doing much better than I am. I can take the watch off the charger, goto the office and be at 90% in less than an hour with LTE on. I can't get more than 4 hours with LTE on on this watch. I think it has to do with crappy signal strength, but what do I know? I just leave cellular turned off. Taked to LG and might send them the watch back to take a look at it.
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I'd say if the signal reception is bad, that's definitely the reason. I've read several posts with this being the reason the battery drops fast. An example, I lose about 25%-30% an hour when I'm tracking runs with GPS, playing music through bluetooth and with cellular on paired to my phone that I leave behind. The cell signal in my area is good. A friend loses 60% an hour doing the same thing in a poor signal area. I lose about 3% an hour with normal usage and cell radio off.