Everyone's always talking about battery life around here, but all those discussions about how long everyone's phone lasts seem pointless. Sure, one guy might be getting 30 hours of battery life, and some other guy might be getting 10 hours, but that could happen with both of them using the same phone if the first guy never touches it while the second guy is a gamer.
So in the interest of having a more useful discussion about battery life, I was hoping people could share how much their phone drains an hour while not being used, along with their configuration. That's what most people actually mean when they talk about battery life, how long it lasts when they're not using it.
By idle I mean with data connected (either WiFi or cellular), accounts syncing, but screen off and sleeping.
I'll start off I'm seeing battery use of about 3-4% / hour, I'm running Juggernaut 5 with faux kernel 009m, no undervolting or overclocking beyond whatever faux kernel 009m comes with.
I get about the same with just about the same setup as you and I think its high drain to be honest, but it gets me through the day. I get anywhere from 10-16 hours on a charge with an average of 3 to 3.5 hours of screen on time. It gets me through my long school days easy. I don't care for getting 20+ hours on one charge, because I actually use my phone and charge it every night.
There is enough hate in the world. Why can't we all get along here ...?
Around 2% per hr.
Sent from my SGH-T989 using XDA App
On warfare ROM, getting 2% per hour with wifi on
Getting about 2% drain every 7 hours overnight with background data on at the moment
Im at 30hr usage with about 25% battery power remaining on the stock rom. Battery isnt as nearly as bad as i thought.
Sent from my SGH-T989 using XDA App
your post is confusing because cell standby is not the same as cell data. it also doesn't say how often the phone is syncing data... once per day?
in any case, i drop about 1% every 2 hours will cell standby (radio) on. stock rom, faux 009 kernel, nexus battery.
shinigenEddy said:
Getting about 2% drain every 7 hours overnight with background data on at the moment
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....
Whoa.
What's your setup?
kife42 said:
your post is confusing because cell standby is not the same as cell data. it also doesn't say how often the phone is syncing data... once per day?
in any case, i drop about 1% every 2 hours will cell standby (radio) on. stock rom, faux 009 kernel, nexus battery.
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What do you mean cell standby is not the same as cell data. What's the difference? Basically, I just mean with some sort of data connection set up, not in airplane mode.
Regarding syncing data, data syncing is continuous as long as you're connected if you have your accounts syncing under settings. There's no way to change the amount of times per day it syncs.
1 to 2 percent drop per hour.
Refer to my sig for more details.
cell standby is when your phone can receive phone calls and texts. cell data is internet, like 4g.
most people like to have their phone useful as a phone, so cell standby is usually on. but data syncing does not have to be continuous. you can open the internet connection for 10 seconds every minute, or a minute every hour, more often during work hours, etc. that's how apps like juice defender work.
also, 2g takes less battery than 4g. so if you're syncing with the display off, you could sync on 2g and just browse the web on 4g. it takes some effort to switch, but tasker can automate this.
manekineko said:
What do you mean cell standby is not the same as cell data. What's the difference? Basically, I just mean with some sort of data connection set up, not in airplane mode.
Regarding syncing data, data syncing is continuous as long as you're connected if you have your accounts syncing under settings. There's no way to change the amount of times per day it syncs.
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kife42 said:
cell standby is when your phone can receive phone calls and texts. cell data is internet, like 4g.
most people like to have their phone useful as a phone, so cell standby is usually on. but data syncing does not have to be continuous. you can open the internet connection for 10 seconds every minute, or a minute every hour, more often during work hours, etc. that's how apps like juice defender work.
also, 2g takes less battery than 4g. so if you're syncing with the display off, you could sync on 2g and just browse the web on 4g. it takes some effort to switch, but tasker can automate this.
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Okay, well those are the types of things it'd be really helpful to hear about. What sort of idle usages people are seeing with different setups, such as when they're using JuiceDefender and the like.
2-5% per hour. Stock rooted phone.
Sent from my SGH-T989 using XDA App
Never mind.
I get about 1/2% drain per hour on standby. Im running Darkside Digital 2.4, it comes out of the box underclocked. Thats on 4g, data syncing once a day, gps off, and alot of apps I dont use frozen or uninstalled.
I get about a 30% drop in 5 hours of no use..with data and wifi off. Now that is bad
Sent from my SGH-T989 using XDA App
Scoutamis said:
I get about a 30% drop in 5 hours of no use..with data and wifi off. Now that is bad
Sent from my SGH-T989 using XDA App
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That's really bad. Sounds like something is wakelocking your phone, you should get BetterBatteryStats and see what's holding the partial wakelocks.
I changed my kernel from faux 009m to Bullet, and set the governor to ondemand.
Cut my idle battery usage down to about 1% an hour, which is a great improvement from my previous 3% an hour.
My phone has been in Stanby since 7am (starting with 100% battery) and its now at 80% battery...
Sent from my SGH-T989 using XDA App
running jauggernaut 4.1, juice defender on (free version), email set to sync once every 4hrs, wifi on, data off, BT and GPS always on, loses about 1-2% per hour during sleep. sometimes it goes a little crazy and lose like 5-8%/hr, but it goes back to normal after reboot.
Related
What is everyone's cell standby battery usage, percentage wise?
Mine is 41%, which seems a bit much.
My battery is down to about 30% in about 6 hours (most of which was in standby).
I'm trying new roms and kernels, so I'm trying to determine whether or not that's the problem.
Today mine is around 34% and I have seen it as high as 41%..After almost 13hrs still at around 65% battery but I've been light on my phone today.
I've been incredibly light on my phone today.
When in some of my classes, I have horrible/no service. I'm thinking that has a lot to do with it.
Are some ROMs or kernels more heavy on the battery when not in service than others?
With my stock rom and kernel, my battery didn't last long, but it was much better than this.
Im usually about 41% also seen as high as 43% but only once....as long as your time without signal is low I don't think its that big of deal..but, if they is a way to lower it without goin into airplane mode would that help battery life?
Well if you guys' cell standby usage is as high as mine, then I guess that it isn't the problem.
I was just asking because it seems like I remember hearing that some phones increase Tx power when they don't have service in an attempt to get a signal.
Mine cycled through 1 bar, roaming and no service for about 50 minutes while in class today.
Maybe I'll just try different ROMs and kernels and find a combination that works for me.
~7 hours of use isn't cutting it since I was getting significantly more time with the stock ROM.
Thanks, guys.
tamas413 said:
Well if you guys' cell standby usage is as high as mine, then I guess that it isn't the problem.
I was just asking because it seems like I remember hearing that some phones increase Tx power when they don't have service in an attempt to get a signal.
Mine cycled through 1 bar, roaming and no service for about 50 minutes while in class today.
Maybe I'll just try different ROMs and kernels and find a combination that works for me.
~7 hours of use isn't cutting it since I was getting significantly more time with the stock ROM.
Thanks, guys.
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A typical battery usage in standby with only 3G on (mobile data always on = off, gtalk = signed off) should be between 1-2%. In 6 hours of standby, you should not have lost more than 6-12% of battery charge. A full charge should be sufficient for about 3-4 days of standby.
nabbed said:
A typical battery usage in standby with only 3G on (mobile data always on = off, gtalk = signed off) should be between 1-2%. In 6 hours of standby, you should not have lost more than 6-12% of battery charge. A full charge should be sufficient for about 3-4 days of standby.
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That's more like what I'm looking for. What am I missing?
tamas413 said:
That's more like what I'm looking for. What am I missing?
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He is not talking about the same thing we are.......he is talking about actual battery usage via battery icon, not the settings, about phone, battery, battery use screen.
I get approx the same battery use few % an hour with phone standby @ 43% of total battery use as long as I have a good signal and not using the phone
Two different things dont get confused.....
JuiceDefender has done the trick. I'm at about 45% battery remaining 8 hours and 2 minutes after being unplugged with 35% of the damage attributed to cell standby.
The only caveat is that Gmail and Google Voice don't push instantly. Of course 15 minute intervals are enough for my email, and a simple text upon receipt by Google Voice lets me know exactly when I get a voicemail.
Thanks all for your responses.
ROMs that contain this mod. When flashing a new rom or kernel, what is the procedure to re cal the battery?
I believe people should post their usage times when stating the number of hours of battery life. I hardly use my phone on Sundays and I can get 21 hours plus. The only way to determine battery life is to state the usage in time for internet, games, call usage ect.
Steve
There is a great app in the market. i think its called battery calibration. just charge battery to when it says 100% and run app. there is also an option to run it when not at 100%.
Sent from my SPH-D710 using xda premium
MedicStuder said:
There is a great app in the market. i think its called battery calibration. just charge battery to when it says 100% and run app. there is also an option to run it when not at 100%.
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+1... great app
https://market.android.com/details?id=com.nema.batterycalibration
+ 1 on that action.
sdglenn said:
ROMs that contain this mod. When flashing a new rom or kernel, what is the procedure to re cal the battery?
I believe people should post their usage times when stating the number of hours of battery life. I hardly use my phone on Sundays and I can get 21 hours plus. The only way to determine battery life is to state the usage in time for internet, games, call usage ect.
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Click to collapse
21 hours on hardly any useage? That's pretty bad.
Today I watched 2 hours of video from the SD card, then streamed 90 minutes from Netflix over 3G, plus the occasional short (less than 5 minutes) phone call, frequent email checks, and some random texting, and I'm sitting at 57%.
On extremely light usage, I unplug at 7am, go through my work day without turning wi-fi off (I let it auto detect and connect to my home network), random texts, check Groupon, check email, short calls, and 30 minutes or so reading with the Kindle app... By 4:00 I'm usually at about 85%.
Dalmus said:
21 hours on hardly any useage? That's pretty bad.
Today I watched 2 hours of video from the SD card, then streamed 90 minutes from Netflix over 3G, plus the occasional short (less than 5 minutes) phone call, frequent email checks, and some random texting, and I'm sitting at 57%.
On extremely light usage, I unplug at 7am, go through my work day without turning wi-fi off (I let it auto detect and connect to my home network), random texts, check Groupon, check email, short calls, and 30 minutes or so reading with the Kindle app... By 4:00 I'm usually at about 85%.
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my battery drops like 17% (from 100 to 83) just playing an hour of music off the sd card(doing nothing else) if I watched 2 hours of video, an hour and a half of netflix plus other usage my battery would be much less than 57%
my work has terrible reception so im always roaming. i was wondering if it makes a difference when i calibrate my battery at work as opposed to on the weekend when im at home and i get much better battery life? does it matter?
paranoid android85 said:
my work has terrible reception so im always roaming. i was wondering if it makes a difference when i calibrate my battery at work as opposed to on the weekend when im at home and i get much better battery life? does it matter?
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Sure does. I almost doubled my battery by switching my roaming to Sprint only.
I cant tell if it's always been like this. Or if this actually isn't normal because I'm always concern with battery life. Im a very heavy user in the sense my phone will be on and im texting, xda, social apps i.e google +, email check every hr, and twitter.
However, i started feeling like my battery has been draining alot faster when the screen is on. I have no problem with the phone sleeping. I was experience this on Calk rom and now acs ics rom. I literally can look at my battery percentage drop 10% in like a half hour. Is this normal if screen is on the whole time? I've used better battery stats and system panel I can't find anything causing the drain. I see the suspend and events but doesn't that effect the phone sleeping?
Sent from my SPH-D710 using xda premium
Are you on the new modem? Looks like you have weak a signal. EG31 might help a little if your not on it already. I used the full EG31 tar right when it dropped and have been getting great battery life (it may be to early but so far so good)
Sent from my SPH-D710 using xda premium
not sure if its going to work but hoping it does thanks for the response still
turn your display down to under 50% you won't see a difference except outside in daylight and kill this app every time you reboot the phone hit Settings>Applications>Running services then hit DRM content > stop > ok
I get over a day on one charge.
Glenn54 said:
turn your display down to under 50% you won't see a difference except outside in daylight and kill this app every time you reboot the phone hit Settings>Applications>Running services then hit DRM content > stop > ok
I get over a day on one charge.
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Ok ill try the drm content stop..however my display brightness is already down at like 10%.
Also, kill the Social Hub as well, that drains the battery significantly.
You might try one of several roms available in dev. They address most of the aforementioned issues.
Sent from my SPH-D710 using XDA App
The biggest battery drain reason is the location by wireless network option. Make sure its unchecked. Ever since I did that, my battery life has been awesome. I get to keep my brightness high, Bluetooth on, etc...
Sent from my SPH-D710 using XDA App
bsmoove386 said:
I cant tell if it's always been like this. Or if this actually isn't normal because I'm always concern with battery life. Im a very heavy user in the sense my phone will be on and im texting, xda, social apps i.e google +, email check every hr, and twitter.
However, i started feeling like my battery has been draining alot faster when the screen is on. I have no problem with the phone sleeping. I was experience this on Calk rom and now acs ics rom. I literally can look at my battery percentage drop 10% in like a half hour. Is this normal if screen is on the whole time? I've used better battery stats and system panel I can't find anything causing the drain. I see the suspend and events but doesn't that effect the phone sleeping?
Sent from my SPH-D710 using xda premium
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All the basics (brightness and all that stuff) on top of the stuff you have running. The darn task killer/manager I see in the icon top left of your screenshot is a HOG on resources check the caching... You can literally **** with these phones for half a day to set it up the right way to conserve. I think wireless is hogging too but I am talking primarily about the first part of your rapid loss, the left part of the graph so to speak.
JC
I purchased an extended battery and was still getting crappy battery life. SpareParts always FC'd on me... but last night I found Badass Battery Monitor in the market and in my opinion it's even better than SpareParts!
It helped me find that the Hotmail app was keeping my phone awake for almost an hour every day even though I had it set to download email only once a day. Removed that right away.
Plus it gives a great % readout in notification of the battery level. I think it's a fairly new app, but it really is worth checking out especially if you're having battery drain problems.
Just killing Social Hub has increased my battery life significantly. I'm at 11 hours now on battery, with 62% left. This is from last night when I unplugged the phone at 100%.
DevalB said:
Just killing Social Hub has increased my battery life significantly. I'm at 11 hours now on battery, with 62% left. This is from last night when I unplugged the phone at 100%.
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I'm on the Sydnicate Rom there isn't even no social hubb app. He has alot of the mods like noCiq and everything. My phone sleeps well its just when I start using it I can see it basically draining like 10% every half hour. I'm a heavy user I know my phone will drain fast while I'm on it I just would expect it to last 8-10 hours on heavy use.
Right NOW:
I'm at 4 hours 12 mins 22 secs at 37% left.
Display Time is 50% 2 hrs 41 mins 51s (Brightness is set all the way down)
Android OS 10%
So I'm assuming in 2 more hours my phone will die. If this is just normal for a heavy user then I guess I have to deal with it?
I was very disappointed with my Epic Touch when I first got it. I was getting a dead battery in about 6 to 8 hours no matter what I did or did not do.
Calibrating the battery seems to have fixed it.
I'm at 73% battery with 8:32 hours up time and I've made about 12 calls ranging from 2 to 10 minutes.
I've also checked voice mails, emails and other stuff.
I just charged the battery til it was full, plugged and repeated until it stayed at 10%, popped into CWM5 and cleared the battery data and then used Battery Calibration from the market (free) and it's like a got a battery upgrade!
As far as wake lock issues, I've not having any of those. I took my charger off the phone around 3:30am this morning (100% charge) and when I left for work at 6:50am, I had 98% battery still.
When I got to work it was down to 96%, I checked my email on the drive there.
I'm trying this out, wish me luck.
There doesn't seem to be any possible way to charge my battery to 100%, unplug it and not have it immediately drop to 99%.
bsmoove386 said:
I cant tell if it's always been like this. Or if this actually isn't normal because I'm always concern with battery life. Im a very heavy user in the sense my phone will be on and im texting, xda, social apps i.e google +, email check every hr, and twitter.
However, i started feeling like my battery has been draining alot faster when the screen is on. I have no problem with the phone sleeping. I was experience this on Calk rom and now acs ics rom. I literally can look at my battery percentage drop 10% in like a half hour. Is this normal if screen is on the whole time? I've used better battery stats and system panel I can't find anything causing the drain. I see the suspend and events but doesn't that effect the phone sleeping?
Sent from my SPH-D710 using xda premium
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Click to collapse
If those screens are both from the same charge, I see nothing wrong with your phone.
you have 17% left, and you have 2.5 hours of screen on time. So you're on target to get just over 3 hours of on screeen time which is completely in the norm for these phones. AND you're over 12 hours. I don't understand what else you could ask for?
People get all caught up on total charge time, but, to be honest, it's completely IRRELEVENT.
If I dont use my phone I'll get easily over 48 hours out of the phone... Screen on time is what matters. And from a full charge, if I were to use my phone for 4 straight hours without stopping, it would be about dead. When the screen is on, you're using the phone, and the display is the biggest battery suck out there. When I do all the tricks to conserve battery, and I set it up right, I get 4 hours screen on time, which is pretty incredible with these phones.
Now, If you WANT to get better then you have right now, a few things are coming into play.
1) Your signal is weak, this will suck power no matter what more then it should, so get better signal if you want some more time out of your phone.
2) If you installed a new rom, and you didn't calibrate your battery properly, you're losing battery life.
to calibrate properly:
a) download battery callibration app from market
b) charge to 100%
c) unplug battery charger and REPLUG IN and wait for 100%
d) repeat step c a couple times
e) while plugged in hit the calibrate battery button in the app
f) unplug phone and use til dead and recharge
This will yeild you the best battery life.
3) De-Theme. Although I use a theme, every theme I've tested, for one reason or another, drains my battery faster then running the stock phone theme.
4) If you haven't done the basic battery saving things, you should do them to help yourself out. Here's a few I use.
a) Turn off background data, you only need it on to use market
b) Turn off, or set sync for all email and social apps at as long intervals as possible
c) dont use any widgets
d) download watchdog lite so you can see when apps are acting up and using extra battery
e) when you're done using your phone, open task manager, kill all apps, and clear memory
f) always leave the brightness off automatic and as low as possible
g) download SETCPU and run your phone at 800mhz, and undervolt as much as possible (50mv most all phone can take)
h) use black or dark wallpapers, on LED screens back means the pixel is off which uses less battery
G will be your biggest battery save. I've also tried using the SUPERFREEZE thing in the dev section and, besides in sleep mode, I saw no adverse effect. If you wanna kill socialhub, fine, but I dont see any noticable difference on my phone with it off.
If you do all these I promise you'll get better battery life.
Wow, I did a proper calibration today and I'm getting great results already. I've calibrated before but I never had cleared stats in CWM or did the unplug then replug charging thing.
Anyways, I after 12 hours I'm still at 35%! The longest I've ever gone before is 12.5 hours. Screen on time = 1 hour 30 min, but some of that was a battery intensive game (puzzle quest 2). Also i'm running calk's rom, so i'm sure that helped.
Thanks kdoggy, i didn't expect to see results this great.
Those are good tips too Jermzz, thanks!
My battery usage for WIFI has never gone above 3% and has only hit that once, normally it is 2% no matter how little or much I use it. What percentage of your battery life is used by your WIFI?
I'm just trying to figure out if the number is accurate and using wifi really does save my battery as much as it appears to do so.
Sent from my Galaxy Nexus using XDA App
I've never really bought in to the whole Wifi saves battery power....I've had the Captivate and now the GN and anytime I leave Wifi on at home, my battery just drains faster. Here is an example, if I leave Wifi off, I've reached about 40 - 48 hours on one charge. If I take my phone off the charger at 6:00am....go to work with Wifi off, come home at 4:00pm and turn Wifi on, by the time I go to bed at 11:00pm my battery is at about 40-50%. In the first scenario with Wifi off, my battery is usually around 70% when I go to bed the first night.
In both of those scenarios, the phone is only being used lightly, but I do see a huge difference if I use Wifi in my overall battery drain. So pretty much these days I just turn on Wifi when I actually need it....but having a 6GB data plan helps in not caring when I use Wifi (for the day to day stuff).
I only use WIFI at home but otherwise have it off. I use Y5 to automatically turn in on when I'm home and off when I leave. It seems to really help me save my battery when at home though since my coverage is spotty since for some reason I cannot stay connected to 4G even though I'm surrounded by the coverage.
That's why I'm asking here if the meter is actually correct because even on the weekend if I'm home all day the meter never shows anything other than 2% after a full days use of downloading apps, surfing the web, messing around on Facebook, and reading things on forums. About 43MB worth of usage and 14 hours and 40 minutes of connectivity to WIFI.
Had my 900 about a week now, and in the first few days the battery life was looking good, lasting nearly two days with lots of texts, emailing, a few pictures taken and lots of talk time.
Then a couple of days ago it suddenly got worse. Started losing about 4% per hour. I charged it fully last night and then this morning nine hours later there was only 60% remaining.
I decided to try and find out what was happening. Found the diagnostics app and the battery drain was showing around 164mA. I don't have anything running that could be using so much power, so I wondered if I was suddenly getting a poor 3G signal and the phone was using a lot of power trying to receive it. So I put it into flight mode. Still around 164mA.
Finally I powered the phone off and then back on. Now it srttled down to around 95mA.
So what was running that was using so much power, that got switched off when the phone powered off? Could it be the GPS? I did fire up Nokia Drive and Nokia Maps the other day to play around with them. Could it be that the phone forgets to turn the GPS off when the apps that use it aren't running?
redwhiteandblue said:
Had my 900 about a week now, and in the first few days the battery life was looking good, lasting nearly two days with lots of texts, emailing, a few pictures taken and lots of talk time.
Then a couple of days ago it suddenly got worse. Started losing about 4% per hour. I charged it fully last night and then this morning nine hours later there was only 60% remaining.
I decided to try and find out what was happening. Found the diagnostics app and the battery drain was showing around 164mA. I don't have anything running that could be using so much power, so I wondered if I was suddenly getting a poor 3G signal and the phone was using a lot of power trying to receive it. So I put it into flight mode. Still around 164mA.
Finally I powered the phone off and then back on. Now it srttled down to around 95mA.
So what was running that was using so much power, that got switched off when the phone powered off? Could it be the GPS? I did fire up Nokia Drive and Nokia Maps the other day to play around with them. Could it be that the phone forgets to turn the GPS off when the apps that use it aren't running?
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Click to collapse
Not sure forgets is the right answer, but you may want to look at the Background tasks and see what is running when it shouldn't.
I know when I add a new app or 2...sometimes I get myself in a position where the battery drain becomes excessive. I usually just unistall the app. You've probably read a few of the battery threads here. If not, take a look. Lots of good conversation about ...well....lots of things....
For me, the biggest drain is Wordament....and its ads....I'll wipe out my battery in an hour playing that thing....
Just finished a series of tests for Background Tasks in my L900 (full article on Mobility Digest). 8 Background Tasks running burns 0.5% per hour, or 8% in a 16 hour day. Tasks included: USA Today, Fox News, Weather Channel, Urban Dictionary, Mehdoh, Network Dashboard, Clever-To-Do and Battery Meter (homebrew app that actually runs every 10 minutes vs. 30 minutes, or longer).
Except for short spikes, my phone always hovers in the 95 to 125 mA range. Data signal is still the biggest battery demon while phone is asleep. Screen while phone is awake.
Sent from my Lumia 900 using Board Express Pro
Overnight my phone seems to have used less than 1% per hour, that's with wifi on but not connected to any network. Perhaps I'll see what it does with wifi off.
I'd still like to know what it was that was draining the battery until yesterday when I power cycled it. I only had the App highlighter app and the Weather Channel app running in background, and I've since disabled the App Highlighter. But they weren't using 4% of the juice per hour. I didn't have bluetooth on.
I guess if anyone is seeing a high battery drain the simple answer is to try power cycling your phone first and see if that stops it.
jimski said:
Just finished a series of tests for Background Tasks in my L900 (full article on Mobility Digest). 8 Background Tasks running burns 0.5% per hour, or 8% in a 16 hour day. Tasks included: USA Today, Fox News, Weather Channel, Urban Dictionary, Mehdoh, Network Dashboard, Clever-To-Do and Battery Meter (homebrew app that actually runs every 10 minutes vs. 30 minutes, or longer).
Except for short spikes, my phone always hovers in the 95 to 125 mA range. Data signal is still the biggest battery demon while phone is asleep. Screen while phone is awake.
Sent from my Lumia 900 using Board Express Pro
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Cool! I'd love to see a wifi vs cellular data battery benchmark.
Well that would be hard for background activities as WiFi goes to sleep at power off.
I did try to use LTE only for a couple days, but AT&T did not start reporting my daily data usage on my monthly anniversary data. I wanted to see how much data I was using over a typical week with LTE only. On can tell you in those two days, LTE was burning 20-30% (13% per hour on WiFi / 17-18% per hour over LTE) more power per hour when the screen was on and I was browsing or using Board Express. A more comprehensive teat will follow though.
Sent from my Lumia 900 using Board Express Pro
jimski said:
Well that would be hard for background activities as WiFi goes to sleep at power off.
I did try to use LTE only for a couple days, but AT&T did not start reporting my daily data usage on my monthly anniversary data. I wanted to see how much data I was using over a typical week with LTE only. On can tell you in those two days, LTE was burning 20-30% (13% per hour on WiFi / 17-18% per hour over LTE) more power per hour when the screen was on and I was browsing or using Board Express. A more comprehensive teat will follow though.
Sent from my Lumia 900 using Board Express Pro
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The above somewhat proves how cellular data can often be a big battery drain comparable to abundant wifi at home or other common places. Looking forward to ur tests.
Well the battery drain problem came back yesterday.
The phone has done pretty well however, with very light use (one short call, a few texts, checking FB, checking the weather and not much else) the battery is at 24% after 48 hours. Overnight it went through about 8% in nine hours.
However, yesterday evening I noticed that the battery was losing 4% - 5% per hour again. By yesterday morning it was at 70% after 24 hours. After another 9 hours it was down to 43%. That's having made no calls, only a couple of texts, and very little else. At 9.30pm I checked the diagnostics app and battery drain was over 200mA. There was no obvious reason why it would be so high. So I powered the phone off and back on again, and sure enough, battery drain settled back down to between 90 and 110 mA, and as I said, overnight the battery lost less than 1% charge per hour.
The only background task I have enabled is the Weather Channel app. I'm going to let the battery run right down, recharge it, uninstall this app, and then see if I can repeat this pattern (if people will hold off from calling me!) If it's not this app then there must be something else, something in the firmware that goes haywire after a certain time and starts using lots of power.
I note that some people have observed that the battery starts to drain quicker after a while. I'd be interested to know if anyone can repeat the same pattern I'm seeing.