[Q] Odd battery drain issue - Nokia Lumia 900

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?
Click to expand...
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
Click to expand...
Click to collapse
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
Click to expand...
Click to collapse
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.

Related

Battery drain with Desire on alcohol

Hi. I know there are hundreds of threads on battery usage, but I felt I have a special story behind my test.
Lately I feel that my battery life has decreased, but I would like some second opinions on the case.
It's over a month now since I received froyo OTA, and I had some suspicions that my battery life went slightly down after that. I used it more to test the new features, so its hard to really know. However, the big problems occurred a couple of weeks ago.
At a party with a friend of mine, a friends friend literally pulls my Desire out of my hand and drops it into a mug of beer! As a joke!!
He had heard me taking about my Nokia 3720 earlier and decided to test it. However, ignorant as he was, he did not see that it was A DIFFERENT PHONE I was holding!
So it took 2 seconds in the mug, and the screen went black, and the phone was dead... Or not really, I took it out and dried it of with my t-shirt, turned it on, and the screen went garbeled green on me...
Decided that it was best to leave it alone, so I took out the battery, SIM and MicroSD, dried them off, put it in my pocket and continued the party.
But I have to admit it was kindof a partypooper for me...
Well, later that night, probably 3-4 hours later when I got home, I inserted the battery and tried to turn it on.. Screen turned on with the familiar white background, and green htc logo.. and some garbeled green at the top, argh...
I took the battery out again, left all the pieces spread out on the kitchen-counter and went to bed.
The morning after (or should I say afternoon ) I looked at the phone, it seemed as it had dried out over the night. So I put in the MicroSD, SIM and battery, crossed my fingers, and turned it on. And it worked fine, like nothing had happened, phew!
But some days after, I am sure that the batterylife has decreased quite a bit, seems to not hold a normal 12-14hour day with normal use.
I did at one point post-froyo (pre-drowning) have it running for 2 full days before charging, approx. 40 hours, not very much usage though..
So, I decided to test it starting yesterday evening.
I let it drain fully (turned it on 1 time after it died, and let it die again). Charged it while turned off, and unplugged it and turned on after approx. 1 hour of full charge (green light).
Now, I have already ordered a new phone (a Streak is on its way over the North Sea as I write this . But I wanted to do the test just for the heck of it.
My girlfriend also has a Desire running Froyo, and I notice she uses her phone WAY MORE for gaming and stuff, and only charges a little more frequent than me.
They are both AMOLED phones, I got mine in Feb, she bought hers in March.
So, here comes the timeline:
@23:30, Turned it on after fully charged, went through all homescreens to activate all widgets. Did not run any programs.
I have no specially data intense widgets, only email and weather (3hr sync). Wifi off, and 3G (H) on always, no active background.
@08:00, On my way to work, Battery indicator (i use *#*#4636#*#* to check battery status) at 88%, recieved 1 email during the night.
Battery usage says: 49% Cell standby, 49% phone not in use, 2% android system.
I have noticed my phone struggling to keep connections while travelling even short distances(pre- and post-froyo), maybe a little worse of a problem post-froyo.
Did not happen today though!
I often need a reboot to get the connection back (Flightmode often works 1 time, but not 2 times. does not activate the second time I try it, just hangs...)
It's not only the data connection, there is no cell reception at all (apparantly).
Maybe I should start a thread on that also, but it is not a big issue for me (this phone is on a free use data plan, almost never use it for calls)
Dataplan here in norway costs around 50$ btw, no other extra costs for tethering and such in norway
@09:45, at work, recieved 2 more emails. now @84%, on EDGE network. battery usage: 53% Cell standby, 45% phone not in use, 2% android system.
not that bad actually... 10:21 "on" time, with 34 minutes active-use time.
Will try to leave the phone alone some more, and do some surfing on it around noon.
@12:55, still at work, used the phone for surfing and gReader for 25 minutes, on EDGE network. Downloaded a BOL revisited episode (podcast), I usually listen to an episode via bluetooth streaming while driving to/from work.
Now @67% and 35°C ( I noticed an temp. increase). Cell standby 47%, Not in use, 41%, android system 9%, screen 3%. uptime 13:35, waketime 1:07.
It connected to H (3g) the last 5-10 minutes or so of surfing. Turned on Wifi when I was finished, to see if I notice any battery decrease.
@14:25, did another 15-20 minutes of surfing, this time on Wifi, now @62%. also was a quick trip via google maps with gps on. battery usage states: Wifi usage 3% and google maps 2% already.. seems they use a lot of battery in a short time.
Wifi is set to turn off after 15 min of inactivety.
TBC....
http://forum.xda-developers.com/showthread.php?t=720717&highlight=teardown
Read that. Do a teardown and clean everything, you're out of warranty anyways.
Most likley a drop/smudge of beer etc inside short circuiting something and you'll have a slow, but increased battery drain from that.
thanks for giving me a heads up on that!
Not sure if I will take the time to fix it though, I'll have to see how much I miss it when I start using my Dell Streak
@15:35. On my way home from work. Writing using voice recognition on android. Battery level is currently @ 46%. Downloaded several emails, and 1 reply. Now connecting bluetooth for BOL streaming.
Sent from my HTC Desire using XDA App
Okay now i'm home, after 40 minutes of Bluetooth streaming battery is @36%. Stats are: cell standby 39%, not in use 34%, android system 15%, screen 5%, WiFi 3%, Bluetooth 2%, maps 2%. Times are: 17:07 total, 2:49 awake.
Sent from my HTC Desire using XDA App
@18:15 Surfing for 15 minutes now over 3g, and battery icon is orange.. level: 27%, awake time is now just over 3 hours.. I think it has held up quite good today, but I have really not used it as much as I normally would. And I also have a suspicion that using less WiFi helps a little on battery. Previous I have used WiFi always on to save 3g usage, but maybe it decreased battery.. anyone with a comment on that?
Sent from my HTC Desire using XDAApp
@18:45. Slight use of xdaapp and browser, now @18% and sinking rapidly :s
Sent from my HTC Desire using XDA App
@19:45, well my battery has just about had it for today, so this will be my last post. It's now @11%, have used it a little the last hour, but only light use..
Sent from my HTC Desire using XDA App

[SOLVED][Q] Battery issues?

Wondering if anyone else has had any battery issues? I went to sleep last night with about 85% or more battery, and 5.5 hours later my phone was dead....when i plugged it in for like 5 minutes to call my work and tell them i was going to be late...when i got to work my phone said 45% phone idle and 45% cell standby for battery use
none here - took phone off charger about midnight, this morning after alarm rang for the full 10 minutes, it still showed 100%
i've been watching it and am really impressed with battery life - is it possible you've got a program running in the background? - i had Startup Auditor to stop apps in the background but had that from before, on my Vibrant
on the vibrant,running a predominantly black wallpaper, screen brightness at 13%, putting phone in "airplane mode" when i sleep, keeping GPS off, data sync off etc, it'd be down to 17-22% at end of day before going back on charger
this G2, running live wallpaper (thunderstorm), no efficiency moves (ie GPS off, etc), screen brightness at 50%, phone still had 34% last night before going back on the charger - and the battery has not "conditioned" - i noticed on the past 2 phones batteries life got better after the first few weeks of use.
Nothing different than my nexus...and i was thinking maybe it was a game but that should have been killed automatically and i dont think it would say phone standby and cell idle if it was an app would it?
tonite you might try putting the phone in airplane mode when you go to bed, and turn off GPS
see what happens to battery drain overnite - if it diminishes then i'd look at what apps you've installed. there was an article on engadget not too long ago that some researchers had analyzed the 358 most popular apps, and found 30 were reporting data to their "mothership" that had not declared it or asked for permission to report data.
hope that helps
well another weird thing is, that when i bought the phone and brought it home, usually it comes with half battery and thats what it showed but i had to charge it quick with no apps really installed on it yet...Im charging now and will test to see what happens with battery...i just removed off alot of my apps.... to see whats up
I'm getting about 10 hours with regular usage though I wish I knew why Photobucket keeps starting everytime i kill it.
I hope you guys charged the phone fully before you used it first. That can play a big role in battery life.
I got my phone yesterday and haven't done any calibrations yet. I've been playing with it like you normally would if you buy a new smartphone. I took it off the charger around 9pm last night and at 7:32am right now I have about 60% left. So roughly 10.5 hours later and I've only lost about 40%. I'm very impressed by that. My vibrant would have been dead by now, it rarely lasts through the night if its not on the charger.
Jrbourque said:
Wondering if anyone else has had any battery issues? I went to sleep last night with about 85% or more battery, and 5.5 hours later my phone was dead....when i plugged it in for like 5 minutes to call my work and tell them i was going to be late...when i got to work my phone said 45% phone idle and 45% cell standby for battery use
Click to expand...
Click to collapse
What's your time with out signal, sounds like the 50% bug to me, google the airplane mode fix, if not you might want to look into a new radio, and you should allways recal your battery after you flash
Sent from my FroyoEris using XDA App
rigbyrobot said:
What's your time with out signal, sounds like the 50% bug to me, google the airplane mode fix, if not you might want to look into a new radio, and you should allways recal your battery after you flash
Sent from my FroyoEris using XDA App
Click to expand...
Click to collapse
what do you mean time without signal? and cant flash the build or radio without root(if thats what you meant) im fully charging it now and removed all of my apps...and going to see what happens from there
I've been using mine off and on mostly text, web and speedtests for 4 hours off the charger and my battery is at 91%
Sent from my T-Mobile G2 using XDA App

32%: Brightness on low, data off, battery saver on and...

... it says I have 4 hours left. Extrapolate that and it gives me 12 hours on a single charge.
I have a stock LG Quantum. Is my battery in need of changing or is this just the norm? (honest question)
Cause this noise is ridiculous.
I have no idea really. My Lumia gives me 22% and 2 hours left, for what it's worth. Unplugged it this morning at 7:30, medium (by my standards) usage.
Sent from my Lumia 800 using XDA Windows Phone 7 App
sure haven't said:
... it says I have 4 hours left. Extrapolate that and it gives me 12 hours on a single charge.
I have a stock LG Quantum. Is my battery in need of changing or is this just the norm? (honest question)
Cause this noise is ridiculous.
Click to expand...
Click to collapse
Probobly a battery problem? Check with the store you bought it at, the warranty should cover the battery problem and they will hopefully send it in and give you a new battery. Just describe it well to them.
I'm using LG Optimus 7 (since April 2011), and got about 26h battery with 100% charge, medium brightness, a bright tile theme and Battery saver. I usually use alot of 3G and Wifi and it's holding atleast a whole day.
I sent it in once for a battery fix and an upgrade to mango (and before that, the battery held for like 19h).
vnvman said:
I have no idea really. My Lumia gives me 22% and 2 hours left, for what it's worth. Unplugged it this morning at 7:30, medium (by my standards) usage.
Sent from my Lumia 800 using XDA Windows Phone 7 App
Click to expand...
Click to collapse
Hope you updated with the battery-fix update for Lumia
22% should give you like 5 hours atleast..
When I had my Focus it would do great on battery for a month, then all the sudden it would drain fast like yours. A factory reset fixed it for a month, then it did it again. I have no idea why, just my experience.
I did update it, but I've been hammering the phone for a few hours this evening. I got 17% now and 2 hours left, I think it's kinda fair. The readings that the options give while you're using the phone are really worth nothing tho...
Sent from my Lumia 800 using XDA Windows Phone 7 App
Sometime, you need to re-calibrate the battery...
But yeah, sometime, i don't even know if my phone display correct battery life or not..
For an Example, i turned on Battery Saver and left the phone screen off while listening to music on it.
2 hours later, the battery dropped only 2%.
Battery usage is hardly linear though
..3g conn off and battery saver on i got 3,5-4 days with calls and msg-s,
i think its battery defect.I got optimus 7 with same battery as you do..
Thanks for the replies guys.
I did a hard reset a while back and yeah, for like a week I was getting 30+ hours of a charge. Now it's ridiculous like I outlined. I really hope it's a battery thing, but part of me knows better?
Unfortunately, my phone's warranty is over. I'm considering one of those more powerful batteries. But it's not OEM stuff, may not be very good.
It depends how you use your phone really, and windows phone calculates the time from when you use it until it drains. I just got my Titan for only a week, installed Skype on it and literally drained for a mere 5hours and 40 minutes on wifi, although talk time states it is 11h 50 min on 2G and 6h 50min on 3G, not surprising it lasted 5h on wifi.
Then after charging, it showed that I only have 5 hours battery life remaining and time since last charged it less than 1 hour. This looked terrible so I did a hard reset and first and went back to 1 day and 15 hours. After a while of not using skype, it lasted about 2 days on regular use (sms, push email, foursquare). Used skype again and battery drained, now I had it with hard reset so I just charged it full and did not use skype on it. Few hours later, it went back to 1 day and (now) 12 hours.
From my experience on my almost 1 year old Samsung Focus,
1. the battery life prediction on Battery Saver is not very accurate.
2. turning on the battery saver will greatly enhance battery life as all background services, syncs and push notification services are turned off.
3. 3G uses a lot of battery.
4. 2G or EDGE will enhance battery life greatly.
5. Amoled displays consume a lot of battery especially with a white theme.
WP doesn't actually last long when browsing over WiFi, I hope this gets sorted either in Tango or Apollo...
Sent from my Lumia 800 using XDA Windows Phone 7 App

battery life of 900, is it good?

guys i want to know if the battery life of your lumia 900 is good? mine sucks, I got the phone about 10 days ago, I find the battery drains very fast. normally the first 3-4 hours are good, but then it will drop like 20% within 30 minutes, then drains very fast, after around 10 hours it's only 20%ish. I use the phone in normal way, check emails as they arrive (about 20 emails a day), text 10-20, phone call 20-30mins, that's all.
I live in UK. first time I launch Nokia Music it stopped response, I had to reset my phone for it to work properly.
is this normal? what should I do to improve the battery life?
I found the battery life alot better on the 900 than my Titan and Lumia 800, I have 2 email accounts on sync every 15 mins and just a weather app running in background, I have tried hard to run the battery out in a day of heavy use and just managed it, It can depend greatly on how strong your signal is from your Network provider as if it has to struggle to find 3G or keep switching then this will drain the battery more, Maybe change email sync to either every 15 min or 30 min to see if that helps, Screen time-out at 30 secs and dark theme can also help conserve power, Check background tasks in settings and switch off unnecessary apps, Also a new battery will need several charges/discharges before it reaches its optimum capacity, Try not to run the battery out completely, Normally just after you get the low battery warning is best then charge overnight.
AndyFZ1S said:
I found the battery life alot better on the 900 than my Titan and Lumia 800, I have 2 email accounts on sync every 15 mins and just a weather app running in background, I have tried hard to run the battery out in a day of heavy use and just managed it, It can depend greatly on how strong your signal is from your Network provider as if it has to struggle to find 3G or keep switching then this will drain the battery more, Maybe change email sync to either every 15 min or 30 min to see if that helps, Screen time-out at 30 secs and dark theme can also help conserve power, Check background tasks in settings and switch off unnecessary apps, Also a new battery will need several charges/discharges before it reaches its optimum capacity, Try not to run the battery out completely, Normally just after you get the low battery warning is best then charge overnight.
Click to expand...
Click to collapse
thanks for the tips mate. i've changed the sync to every 15mins. I also manual input apn option and turn of the location service. hope this will help...
Are you connected to a MicroCell anytime during the day. They are known to drain battery quickly. I have a lot more running than you (email & background) and my average "screen off" drain is about 3.5% per hour, or 56% per 16 hour day. That leaves me about 4 hours of screen on time before my battery is nearly drained (screen on/data/calls drains another 9-10% per hour). Pretty impressed with my battery actually.
Sent from my Lumia 900 using Board Express Pro
How do you guys measure the % drain per hour on the lumia? I know android does like a graph and stuff is there an app for it?
I have
Four email sync
Twitter
facebook
weather app
and take photos
and a few calls.
lasts me anything between `12 hours - heavy use to around 19 hours of mild to normal use and am actually quiet impressed with the battery.
Suggestions :
Turn off WIFI when not in use as it uses power to search for signal
Poor Network coverage will DRAIN battery as well.
Disable any Background tasks which you do not need.
And I charge my phone every night regardless of the battery percentage even if its 50% left
Search feature of the forumn... is it good?
thread in this forum all about battery life.
If you are in a known WiFi area, like home or work, no need to turn off WiFi. Uses less power for data transfer than LTE, but of course, may be a bit slower. Out and about and have your screen on a lot; might be a good idea to turn of WiFi. WiFi uses almost 0 power when your phone is sleeping.
Just finished a series of Background Task tests. Comparing drain with tasks enabled/disabled. About 0.5% per hour or 8% per 16 hour day. That's with 8 tasks running; USA Today, Fox News, Weather Channel, Mehdoh, Urban Dictionary, Network Dashboard, Clever-To-Do and Battery Meter. Btw, Battery Meter is a homebrew app, but you can check percentages on the Settings>Battery Saver screen.
Sent from my HTC Surround using Board Express
tfn said:
How do you guys measure the % drain per hour on the lumia? I know android does like a graph and stuff is there an app for it?
I have
Four email sync
Twitter
facebook
weather app
and take photos
and a few calls.
lasts me anything between `12 hours - heavy use to around 19 hours of mild to normal use and am actually quiet impressed with the battery.
Suggestions :
Turn off WIFI when not in use as it uses power to search for signal
Poor Network coverage will DRAIN battery as well.
Disable any Background tasks which you do not need.
And I charge my phone every night regardless of the battery percentage even if its 50% left
Click to expand...
Click to collapse
The diagnostic mode will help see the battery percentage and power drained per second.
Just press ##634# and you will be able to see it.
ehe12 said:
The diagnostic mode will help see the battery percentage and power drained per second.
Just press ##634# and you will be able to see it.
Click to expand...
Click to collapse
I do know about the diagonistic mode... but uninstalled it as there are rumours it eats battery as well
Why would the Diagnostic App, which can't be uninstalled, as its part of your ROM, have anything to do with draining your battery. How do these rumors start. Guess this is another "truth" I will have to prove. Running a series of articles on Mobility Digest to squash all these urban legends. So far, push email, battery saver and background tasks. More to follow.
Sent from my Lumia 900 using Board Express Pro
I don't think it does, I loaded it up yesterday to check what my battery drain was, since then my phone has used 27% in 22 hours. Perhaps it uses a lot of power while you're using it, but surely not just by having it installed.
jimski said:
Why would the Diagnostic App, which can't be uninstalled, as its part of your ROM, have anything to do with draining your battery. How do these rumors start. Guess this is another "truth" I will have to prove. Running a series of articles on Mobility Digest to squash all these urban legends. So far, push email, battery saver and background tasks. More to follow.
Sent from my Lumia 900 using Board Express Pro
Click to expand...
Click to collapse
It can be uninstalled as I have installed and uninstalled it quiet a few times now, probably it on a hidden partition of the ROM, but you can remove it.
Just for the sake of it I kept it all day today and my battery life was not affected as such,, so rumours are rumours after all
No, all you are doing is making it visible or invisible. Its always there. Do you actually see it installing like a Marketplace app, or does it just magically appear when you type in ##634# (or whatever it is). Oh, never mind.
Sent from my Lumia 900 using Board Express Pro
Got the phone brand new yesterday so below are the first discharge stats with wifi ON only and cellular data off and max speed set to edge.
Remaining battery: 57%
Time since last charge 7 hours.
I've been playing with it from time to time since I unplugged it. 2 emails fetching every 15 minutes, whatsapp, downloading and testing apps.
How does it rank for a first discharge?
Difficult to say. The first thing you should do is dial ##634# on the phone keypad which installs the diagnostic app, then you can check the battery discharge rate. It usually jumps around for a few seconds and then settles down to around 90mA - 110mA. If it's higher than this, something is draining the battery.
I'm finding that sometimes various apps seem to start up some sort of process that continues to drain the battery even when it's not doing anything, and the best thing to do in that case is a soft reset.
Doing this I managed 60 hours between the last two charges, and since then I've gone 80 hours with 29% still left. That's with very light use and no apps installed though.
redwhiteandblue said:
Difficult to say. The first thing you should do is dial ##634# on the phone keypad which installs the diagnostic app, then you can check the battery discharge rate. It usually jumps around for a few seconds and then settles down to around 90mA - 110mA. If it's higher than this, something is draining the battery.
I'm finding that sometimes various apps seem to start up some sort of process that continues to drain the battery even when it's not doing anything, and the best thing to do in that case is a soft reset.
Doing this I managed 60 hours between the last two charges, and since then I've gone 80 hours with 29% still left. That's with very light use and no apps installed though.
Click to expand...
Click to collapse
My drain reads around 100ma so I guess I'm good.
i'm not getting good usage with the battery now, on my 3rd charge, and so far only able to last 1 day, and i'm not even consider as a heavy user, no text, only few whatsapp (around 10) 15-20min calls and little browsing and market downloads. i didn't even on the auto update for emails... hope that the battery will improve after a few more charge...

Standby drain

When you sleep, does your phone sleep, or does it stay up all night and crunch 1s and 0s? Rate this thread to express how you deem the speed at which the Samsung Galaxy S8+'s battery drains under standby conditions. A higher rating indicates that when the phone is not in use, the battery drains minimally.
Then, drop a comment if you have anything to add!
XDA_RealLifeReview said:
When you sleep, does your phone sleep, or does it stay up all night and crunch 1s and 0s? Rate this thread to express how you deem the speed at which the Samsung Galaxy S8+'s battery drains under standby conditions. A higher rating indicates that when the phone is not in use, the battery drains minimally.
Then, drop a comment if you have anything to add!
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Click to collapse
Hello. I've recieved my mobile phone about week ago and there is one problem that annoys me. While the phone has lcd turned off, it drains a lot of energy. For example, yesterday I slept 7h and the battery decreased from 80 to 50%! I've tried almost everything, offline mode, aod off, battery saver mode etc. Any solutions?
Not that much
I think it's a lot ! I've seen many baterry usage screenshots and I was impressed. But mine is some kind of joke. I can't even use my mobile phone often at work because it's dead from 8 to 16, with all options turned off - aod, sync, gps etc. Also with baterry saving mode. Please guys, there must be a way to fix that.
Przezro098 said:
Hello. I've recieved my mobile phone about week ago and there is one problem that annoys me. While the phone has lcd turned off, it drains a lot of energy. For example, yesterday I slept 7h and the battery decreased from 80 to 50%! I've tried almost everything, offline mode, aod off, battery saver mode etc. Any solutions?
Click to expand...
Click to collapse
Maybe try and disable bloatware using BK package disabler. It helped for me after disabling a few things
Unfortunately it did not work. I've tried everyrhing..
with only wifi and sync on, battery drains 3% from 11PM to 6AM
4G on
Wi-Fi on
Sync on
Over night From 12 to 8am is 2-3%
Not more.
there's a hundred settings for better battery life, putting apps to sleep, app background data, app data while data saving, notifications, permissions, etc etc etc....
Change network mode to 2G only. You will see standby consumption go from 1-1.5% per hr to .3-.5% per hour guaranteed. Obviously more drain if using always on display and/or other heavy features. Works perfect for me as my s8 is my secondary phone and don't need 4g.
ps. sot currently was like 6 mintues so didnt post screenshot of that, although im able to get around 5-7hrs sot with about 24hrs total use time. Also rom is renovate ice note 8 port ver .1 all stock settings otherwise. Also i got pretty much the same battery runtimes with stock or custom roms. Same usage with lte/3g/2g setting enabled got me nearly 5/6 hrs sot with around 16hrs total usage but really standby was affected by this setting change.
bluheart said:
4G on
Wi-Fi on
Sync on
Over night From 12 to 8am is 2-3%
Not more.
Click to expand...
Click to collapse
how much would it be with AOD on ?
Snapdragon S8+ rooted.
Not touching the phone, I lose about 10% per hour. A thirty minute drive to work, with Pandora the only app in use, it runs through somewhere between 15-20%. I've tried everything, including telling its mother and using the kitchen sink, but nothing helps. One day we weren't busy at work, and I forgot my charger at home. By 11am I was at 9% (that's after leaving the house at 7:30am) and had to make a run to Walmart for a charger. On a normal day, I have to charge it 2-3 times. On an extreme use day, I have a constant tether.
Not that much
I lose 3% or so over 8 hours of sleep. Make sure you go through your battery management and options to end draining apps when left in the background.
Stock US unlocked S8+
I'm going to leave my S8+ (unlocked) history so that others can relate and solve as i did:
Bought mine with a German ROM (DBT), and as soon i as connected it to Wi-Fi it got updated to QH3 (latest).
Notice immediately a "Android System" drain that would take over almost 50% of phone sleep time. After some days decided to a "Reset / Factory default" but same story, drain ...
Solution ? Flash different region software (PHN - Netherlands - G955FXXU1AQI7 )
Now it sleeps like a baby and "Android System" remains very low.
Imm experiencing huge battery drainage since the new firmware update......no clue why
Oh and my phone is warm in idle and becomes quite hot when doing low intensity tasks such as loading this site
It's too bad
Thanatos355 said:
Snapdragon S8+ rooted.
Not touching the phone, I lose about 10% per hour. A thirty minute drive to work, with Pandora the only app in use, it runs through somewhere between 15-20%. I've tried everything, including telling its mother and using the kitchen sink, but nothing helps. One day we weren't busy at work, and I forgot my charger at home. By 11am I was at 9% (that's after leaving the house at 7:30am) and had to make a run to Walmart for a charger. On a normal day, I have to charge it 2-3 times. On an extreme use day, I have a constant tether.
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Click to collapse
If this true, I may give up to purchase one. I don't like to bring a power sink. And there is not always have a store that I can charge my device.
DorisSheh said:
If this true, I may give up to purchase one. I don't like to bring a power sink. And there is not always have a store that I can charge my device.
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Click to collapse
That's been my, my son's, and several other people's (in the root threads) experience. There are a whole slew of people that have great battery life with root, but mine is abhorrent. I actually went back to stock, and have been astounded how much longer the battery lasts compared to having it rooted.
Use Tasker!
krwlng said:
with only wifi and sync on, battery drains 3% from 11PM to 6AM
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Click to collapse
Program Tasker to switch off all internet access, auto sync and wifi and Bluetooth. Once switched on, the phone will regain all functions. In a 12 hour shift, with occasional use, I lose about 20% of battery power.
I like Galaxy S8
This is best phone I every wanted. Galaxy S8 is best device in its own. No one can beat it.

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