OK, so here's the deal:
Had my S2 for about a month now, and apart from the battery draining faster then would be nice this phone is an absolute killer cool thing
But now here is the issue:
In the month I had this phone I had 3 occasions of the battery draining to empty while it is ON the original wall-charger. Do describe the most recent case:
Im at work, and I see the battery could use some charging soon. So I plug it in, leave it for a bit with screen turned off. A bit later I pick it up whilst still in charger to do some minour things on it. After a few minutes (phone very hot in mean time, but known issue) it gives me a pop-up that I need to plug in the charger which it is already on. So I check my Juice Plotter and notice that indeed it sees it is on the charger, but the line which shows you the level your battery is charged is coloured red and has been dropping just as fast as before I plugged it in. Near critically empty?
So to check if some app is draining the juice in the background i closes all running services and apps and leave it for a moment. I check: only about 1 percent charge left? O - M - G.
So i did what I did in previous 2 cases: Turn phone off to get it charged to at least about 20% (how nice that someone/something else is forcing me to be unreachable by phone ). When I turn it back on at that point, I check juiceplotter first... No real changes or battery charging for first maybe 5 minutes (it just stays at a flatline level) and then finally it starts charging again slowly but steadily.
What's the deal here?
Since 1st time this happened i started keeping my home screen as clean as possible and such to be as energy-efficient as possible. Barely use screen-brightness (by the way the auto-brightness sucks). On 1st page of homescreen I have the Juice plotter widget showing me battery depletion / battery charge time levels. Funny that in the explained problem cases you can actually see the time till charged getting longer and longer by the minute :S
Hey guys the more i use my note daily it seems I'm hating battery life already. I basically have all features turned off and the screen brightness at its lowest. my battery usage is saying about 2 hours and 45 mins of screen on time till completely dead over an 8 hour period. What's the usual you guys are seeing on this. For only actually using the phone for about 3 hours with no games or special notifications or refreshes. Wifi is off I'm under clocked to 1.1. The battery is atrocious. I know its not made for battery life but being it has a larger battery then any cell and a little smaller then the razr Maxx i expect a little more. Makes me think there is a problem.
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h3r3tic said:
Hey guys the more i use my note daily it seems I'm hating battery life already. I basically have all features turned off and the screen brightness at its lowest. my battery usage is saying about 2 hours and 45 mins of screen on time till completely dead over an 8 hour period. What's the usual you guys are seeing on this. For only actually using the phone for about 3 hours with no games or special notifications or refreshes. Wifi is off I'm under clocked to 1.1. The battery is atrocious. I know its not made for battery life but being it has a larger battery then any cell and a little smaller then the razr Maxx i expect a little more. Makes me think there is a problem.
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A couple of things come to mind:
1) Have you checked CPU spy to make sure you're going into deep sleep? (are you aware of the bug with disconnecting the charger while the phone is sleeping?)
2) Are you in an area with LTE and WiFi most of the day? I know it's opposite of what we're used to, but we've learned that the WiFi radio actually uses far less power than the LTE radio. Just something to think about.
Just some thoughts.
When mine goes into deep sleep I loose 1% per hour (wifi off, data on). I agree you need to get CPU Spy to be sure yours is going to sleep. When the charge wakelock problem occurs I'll loose 3% per hour - that adds up to 1/3 of the total battery during a 12 hour day. The work-around so far is to make sure you wake the phone AND unlock it before unplugging it. Most people only seem to have a problem with non-stock chargers and charging from USB ports.
The single biggest battery user is the screen. I highly recommend using Screen Filter and setting up a Widget set to 75% to use indoors and during cloudy days (then another Widget set to 30% for dark rooms - and turn it completely off for full sun). LED screens use less energy the darker they are, which is why this helps. I go into it in detail here: http://forum.xda-developers.com/showthread.php?t=1544757
Then there is the overnight charging problem (not related to the issue in the first paragraph). Once the phone hits 100% it only trickle charges for a little while. You know when the trickle charge has ended because that's when the "unplug me" nag comes up if your phone is on, or the screen comes back on for a few seconds showing a full battery icon if the phone is off. Once this happens it stops charging - so if your battery was almost full the night before you could hit this stage by 12 or 1 am, then it will start to run down again so the next morning it will appear to discharge fairly rapidly. If your phone is heavily discharged the night before you might not hit this point until 3-4 am (or later if you are using a non-stock charger or USB port), so the battery really will be nearly full the next morning and it won't appear to discharge as fast. The only way to get around the problem is to boot in the morning and then leave it plugged in for 15-30 minutes, or if it is already on, unplug and then re-plug it. Either way it will re-start the charging process and top off properly. The stock charging algorithm is just too conservative IMO. It should cycle the trickle charge mode on and off for up to 8 hours to ensure overnight charges really give you a full battery the next day, and not a battery that is only 96% full. Right now it allows the battery to drain back to 95% before automatically starting the charge process over. So ironically the less you use your phone the day before the less battery you'll have the next day if you don't top it off.
I'm going into deep sleep immediately if i leave my phone off the charger over night prolly 6-8 hours I'll only lose maybe 3 percent at most with wifi on. My standby time is awesome its my on screen time that's the problem. I don't have lte available where i live yet. My phone is always at 98 percent max after charging. I did check out a screen filter before but do i seriously need for my 750 dollar phone to look like sh*t to make it through a day? I jumped from a 4s to here where i got at least 20 standby and 6 plus hours screen time before charging with medium auto brightness full notifications enabled. Granted it is a smaller screen but its also smaller battery with what i would think is more draining data features. I thought led screens were supposed to draw a lot less power? My basic reason for the post is wanting to know what everyone else was concluding from average use of screen time before needing a charge. 3 hours of screen time is like two movies and my phone is dead. What's the point of a big screen cell if i always need to charge it after light use every few hours. Its basically a tv at that point which is always plugged in.
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Which is why I recommended Screen Filter. It doesn't make your screen look like crap, applying a light filter (like the 75% I recommended) just dims it down a little. It works along with the stock auto-brightness feature, too. Using this I get 4 hours of screen time with 15-16 hours total run time. Most people report 3-3 1/2 hours of screen time w/o using Screen Filter. You won't get 6 hours - count the number of pixels on your old phone compared to this one.
With no tweaks other than lowering the brightness I'm averaging right at 4hrs of screen time.
Sent from my Samsung Galaxy Note
i get about 4-3 hours of screen time with my overall screen time ranging from 10-16 hours depending on what else im am doing.
i also have profiles set up to keep my cpu in check while in call or screen off. i keep my phone on 100% brightness ALL the time as well. so if i did choose to dim it i could probably squeeze more life out of it.
Ya I'm at 27 percent right now 13 hours on battery about 2 hours of screen time with screen filter at 64 percent the phone brightness all the way dim. I can't see 4 hours if i tried. I dunno what the hell is wrong. What roms are you guys running? Any refreshes on face book tango scramble with friends etc. i lost about 5 percent over night with everything on. I'm using go launcher and handcent sms mostly occasional Facebook checks and fancy weather widget i use system tuner on demand 192-1.5. with screen off on 192-718 max and call settings. I drop like a percent like every 2 mins it seems when the screen is on. Also I'm on unofficial alpha 2
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So got my S3 yesterday, installed some apps, etc. Throughout the day, battery life seemed respectable. Last night, I charged to 100% and let it sit overnight with nothing running. I woke up 7 hours later agreed and my battery was unfortunately at 81%.
1) The first problem (and this may be related to the battery standby usage) is that it claims I had No Signal and No Data Connection which was untrue.
2) The second problem is this "wlan_rx_wake" and "sec-batter-monitor" kept the phone awake.
Any ideas?
First impression for me is that this isn't an issue. I have sync off and update only when charging. Went to bed @95%, woke up it was 92%.
I did notice that it seemed to take a bit longer (than the One S)to get up to it's first full charge yesterday. This might have been my imagination though. It is a fairly large capacity battery.
From my experiences with new devices and even flashing new roms and updates. Give it a few days to cache and cycle. Then once the battery gets broke in you should be able to share your charging / discharging experience. I would rule it out as a hog yet.
This happened with my most recent firmware upgrade on my Asus transformer prime..Updated, drank juice, now after a week its better than ever.
Plus with everything you have on Bluetooth and such that can REALLY drain a phone..
I agree with discharge cycles and OS calibration but there shouldn't be wakelockers engaged.
Turned off WiFi, now there is a "deleted_wake_locks" under kernel wakelocks. What is that? Lost like 4% in 90 minutes of no use and "deleted_wake_locks" engaged the phone for 80+ minutes.
Does anybody know how long the notification light keeps blinking after getting a notification? I woke up in the morning and the light was blinking and had a text message from about 4 hours before the time I saw it. The blue LED was blinking. I hope it doesn't stay on until I see the notification since it's gotta use some of the battery.
shorty87 said:
Does anybody know how long the notification light keeps blinking after getting a notification? I woke up in the morning and the light was blinking and had a text message from about 4 hours before the time I saw it. The blue LED was blinking. I hope it doesn't stay on until I see the notification since it's gotta use some of the battery.
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That's pretty much the point of the LED - if it only lit up on arrival you'd have to be staring at the phone all of the time. But a flashing led like that should have a tiny impact on battery life.
there is a thread or two in the I9300 forum about cell standby, wireless wakelocks and battery drains. i was hoping i wouldn't hear about this with the US version but it looks like something similar is happening.
http://forum.xda-developers.com/showthread.php?t=1698289
You have one bar in the picture.. is that the same place you left your phone overnight? Even if you have signal albeit low signal your phone gives the radio more power in an attempt to hold onto that signal. That could have something to do with it. Also, I guess wifI is holding a wakelock :/
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i have to agree, low/no signal sucks bat life big time!
looks like wifi and bluetooth wer in use the entire time....
another tip, when you get done charging it, reboot it.
me personaly, i charge my phone while im asleep, then unplug and reboot as im headed out the door in the am...
to me it seems smarter to start the day with a full tank than a partial one and wind up hunting for power later....
i have no complaints about battery life..i have been on the same charge for 15 hours with light phone calls, heavy texting and web surfing, and my battery is still at 36% and this is only after my first charge cycle so i am guessing it will only get better after a few more cycles
After a few days with my SIII, I can say that the battery life is not quite as good as the One S I had briefly. It is however way better than the G2x, Evo, Indulge, and Sensation.
I will be getting at least one spare battery. I did not like having a captive battery in the one S. Keeping and using spares is not an issue for me.
First charge not bad
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Hey guys
i got SGS2 with Slimrom 4.4.4
When I use the phone, its screen starts flashing brightness up and down after it happens the phone shut down
When I start charging the phone is starting to be loaded from 0% (before it shuts down the battery was 60 percent)
After I load the phone from zero percent to 5 percent at least
I turned it on and he returns to the normal percentage that he had before it shuts down
It is important for you to know: After the phone turns off the first time I can not turn it on without to charge it
All those who think that the problem is the battery: I bought a new battery but It did not help
Hello guys this is my first post talking about my problematic i9001
A few months back (in november last year) I consumed the battery till it got to 0% and it shut itself off without turning on. Whenever I tried to plug the charger in , it would show a grey battery with a circle in the middle on and on without charging . Then I tried plugging the battery to a universal charger and miracle ! The phone turned on ! But whenever I charge it , the phone gets reaaaaally hot and charges really slow .
Last night I left the phone to charge overnight (plugged it in at 2%) and in the morning the phone had the same grey battery logo meaning the battery is completely empty
So I know the battery has issues BUT does my phone also have USB charger issues ? Because it charges really slow and the phone gets really hot.
Sorry if I did any mistakes and if I did not give enough details
Advicement