Samsung Galaxy S II :: Losing 30% Of Battery When Rebooting?
Feb 12, 2012
when I have tethered for a while, if I reboot the phone afterwards, my battery drops by around 30% just on the reboot. For example, if I have 44% left after tethering and then reboot by pressing and holding the power button until the phone reboots, by the time it's finished booting (which isn't long) it has dropped to 14% and it tells me to plug the charger in. If I don't plug the charger in (this is a real mystery this bit), every few minutes, the battery will keep increasing by 1%. This is without really using the phone much that it does this. It will keep regaining that 1% every few mins until I reboot the phone again and it remains at whatever it's got up to during that time.
I'm ringing Samsung tomorrow as I am pretty sure this isn't normal behaviour. However, I would like to ask if somebody might be kind enough to tether for about half an hour or so with their s2, then reboot (using power button and holding it til phone auto reboots) and tell me if you also lose more power. And then of course, see if it starts to creep up again.I know that's quite a big ask and would only advise somebody with truly unlimited data to try it as tethering consumes a lot.Bear in mind that tethering also drains battery anyway so make sure you have at least 60% prior to trying this just in case you lose the power too.
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Feb 18, 2012
I posted about a problem with my battery losing up to 30% battery on reboot but got no answers so am hoping somebody will test their phone for meWhen my battery drops to just below 50%, if I reboot by pressing and holding the power button for about 8 seconds, on reboot, my battery has dropped to as little as 13%, even if there was 48% left prior to rebooting.I originally thought this was happening after tethering but it has turned out, it does it regardless of how much or how little I use the phone and even without tetheringI am on stock 2.3.4 XEU, manufacture unlocked and wondered if some kind soul would be kind enought to see if they can replicate the problem.It needs to be the 9100, complete stock and not rooted really as I am trying to determine whether it's a hardware issue or software issue.
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Sep 28, 2011
I have a talktalk account they come through to my phone and then they delete themselves.There does not seem to be any reason but its very frustrating as I read them and if I want to go back to them sometimes they are there and sometimes they have deleted thereselves!! Are there any settings that could cause this ?
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Aug 5, 2015
So this just started today. I just unplugged my S6 from my charger, after charging it from heavy usage a few hours ago. I boot it up, and a minute later I notice that my battery has dropped by 2%. A few seconds pass and now the device was at 97%. I was puzzled and was wondering if my battery life was getting bad.
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Sep 18, 2015
I have a weird issue that's been happening sporadically on my Verizon S6 (stock, 5.1).
On about 3-4 occasions now, I've turned off the phone at night, and the next morning, when turning it back on, I've experienced a loss in battery percentage. I.e., Charged phone to 100%, turned off phone overnight, turned on phone in the AM and battery percentage reads 75%.
Last night, it happened again, only I shut the phone off with about 75% battery. When I turned it on again this morning, my battery percentage had decreased to about 62%.
It's odd, and have never seen this before. This has only happened after the 5.1 update, so not sure if its related to that.
Why would a phone that is turned off be using battery power?
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Jan 18, 2012
I have had an SGS and now this week have an SGSII. When upgrading, the Android OS is a pain compared to other OS systems, in that is wipes all installed apps and configuration each time. Upgrade a version of Windows for example, and it does not lose all your config. Is there any app or restore method that will put everything you had installed and configured as it was? Otherwise it takes Hrs to get phone back to correct state each time.
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Nov 1, 2011
i use Samsung galaxy s2 with the latest firmware version from Samsung kies (ginger bread 2.3.5) , the problem occurred after installing external SD card and move bunch of apps to it,i tried removing the external sd card from my device, the device stoped rebooting, when i insert it again the device keeps rebooting over and over, the problem is obviosley is moving apps to SD card, i tried to delete the content of the file (andro secure) in SD crad this file includes the moved applications from phone memory to external sd, the problem also stoped
its one of the two: 1- android do not accept lots of apps in external sd or 2- there is a problem in a specific app in external sd which make the phone rebooting over and over but i don't know which app is causing the issue because i have lots of apps installed !
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Apr 14, 2012
my s2 has just started rebooting itself over and over and im not sure what steps to take so asking for some kind advice please.
I updated to ICS via kies around 12.30 this afternoon from gingerbread (after backing up my phone). My phone is branded vodafone but unlocked and is using an o2 Sim.I cant tell you any build numbers etc. The furthest the phone boots is as follows... turn on, the booting logo, sim card unlock pin, pattern unlock screen, once unlocked the screen is black, after 30 seconds or so, it reboots and does the same again but minus my sim unlock screen. It reboots to the pattern lock screen instead.Ive barely used it all day other than to take a look at whats new, i was about to begin a txt message when it randomly rebooted and just restarts.
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Jun 29, 2011
So far this has happened 3 times:I was listening to music on the phone and then suddenly it stoped and played the startup music. When I unlocked the phone it had a blank screen and only a couple of icons at the top, one being the battery indicator. A few seconds later and its fully rebooted with signal strength etc
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May 12, 2012
I went to settings and then About Phone. Subsequently, I checked for updates and after that I tried updating my phone. The file size was around 12 MB after which it proceeded with rebooting the phone. Unfortunately my phone is not getting rebooted after the software update. It is stuck with the screen showing "Samsun Galaxy S2 GT-19100G". The welcome note with the music screen is also not appearing.
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Jun 20, 2015
I entered my old email on my samsung s6 and want to use my new one with a new account, but it says i may lose my contacts, which i strongly dont want to, and i also want to keep all the pictures i have, is there any way to change samsung account without losing contacts and pictures?
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Sep 11, 2015
This has only started to happen today since I agreed to a system update. I have tried a factory reset and wiped the cache but it is still happening.
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Jun 24, 2011
It looks like my Blackberry Torch is rebooting. The phone has gone to the Blackberry screen with a white time line loading at the bottom. I am concerned that this is reloading the device and I could lose all my content. I have tried to switch off - unable to and when I remove and replace the battery it still resumes. Obviously I have not downloaded my contacts/diary recently.
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Aug 9, 2012
Is there a Galaxy Nexus battery available that doesn't require a different battery cover and doesn't have NFC?
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Jan 29, 2010
Does anyone have any issues with the battery life on this thing? I just picked mine up from Bell about a week ago, and standby lasts maybe 48 hours. Its rated @ 250 hours and although I wouldn't expect to see that, this is a little ridiculous. 48 hours is sitting only. If I make a couple of calls, its basically dead in a day. This is with GPS / WiFi and Bluetooth disabled. The only aftermarket programs installed are Barcode ( which doesn't run when off ) and TaskPanel which allows me to kill background processes.
What I notice is that if I run TaskPanel and kill everything, and then the phone goes into standby. When I wake it back up and run TaskPanel again, I see Alarm Clock and Calender are running in the background. Neither have any stored events and I don't know if they are kicking in on wakeup, or right before standby and thus running in the background and killing the battery faster.
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Nov 6, 2011
so today i noticed that my phone while its in charge which is very frequent, battery life is not good, is loosing battery power, thats only if i use the phone heavily, for example the phone was 62% charged and i was playing asphalt 6 for 15 minutes and the battery % dropped to 51%! is this normal, i am using a stock firmware its rather old, but kies doesnt give me any updates.i got 2.3.3 gingerbreadbaseband I9100XXKF1Kernel 2.6.35.7-I9100JPKF2-CL292610 root@DELL102#2i know that im using an old firmware and kernel and i have to update, is the issue that i mentioned a known bug in the earlier firmwares or, do i have a faulty battery, or perhaps its normal and happens to you guys too.
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May 4, 2011
I received my SGS2 yesterday and, as I have not had the chance to transfer all my data over as yet, I have left the phone on idle since it is first charge. I thought some idle battery usage data would be quite rare and potentially interesting to potential buyers.
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Jul 2, 2011
I've only had my SGSII a week or so but have been very unimpressed with the battery life I've been achieving - not even a full working day.I've been trying to work out what's going on, but this morning things really seemed to come to a head. I'd charge overnight but within an hour and a half of disconnecting the phone almost half the charge had gone & the back of it felt very warm to touch.
Looking at the battery stats and using the Watchdog program it looks like the Samsung Email app is to blame. I also saw the phone was marked as 'awake' much of the time, presumably due to a partial wakelock from the Mail app (battery history in Gingerbread doesn't seem to actually have partial wakelock as a category but this certainly looks like it). I've got three accounts setup in it - 2x Microsoft Exchange and 1x IMAP. Refresh times were initially push (MSEx 1)/manual (MSEx 2)/15 min (IMAP). I've tried changing them all to 15 min or to manual but it doesn't seem to improve matters. In case it is of relevance, the MSEx ones are imposing device & storage encryption as part of their policies (I've no choice in this).
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Oct 7, 2011
-how can i disable low battery notification? its just stupid, i know when battery is empty.
-i made a folder and put applications in it. how can i rearrange the applications in the folder?
-i have a poor connection to the wireless router with wifi. how can i change that? can i change the range of the router to get a better connection?
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Aug 9, 2012
I just got the Samsung 2000 mAh extended battery for my AT&T GS2, but when I went to charge it, the phone shut off instantly, and the power-off charging icon flashes on the screen for a split second every few seconds. It isn't charging during that time, and when I unplug the charger the phone automatically turns on. I'm using the original Samsung charger.
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Dec 8, 2011
Has anyone else had a problem where the battery notification icon says 100% even when the actual power is much much lower? I noticed this the other day after watching my Slingbox for over an hour, which should drop the battery way down, and it still said 100%. The "My Device" battery page also said 100%. I did a restart, and it instantly went to 47% and then continued to function normally. It's done this several times, and seems to get stuck only at 100%. Also, when in this mode, it won't charge. When I plug it in I get a message "Battery 100% charged
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Sep 30, 2011
i am happy to join this forum with all of you,, i just got SGS II from 2 days i noticed that in the 1st day the battery was going well but after i installed some programs and games the battery drain become X2 than 1st day ( 1st day i was testing it and opening options and trying app. and it stay for 1 day and 5 hours approximately. but after installing the games and apps it still for 1 days and 6 hours but without using it as much as 1st day i tried to check the battery usage and i found that every thing is low and good but the display usage became over 76% no widget just 6 and the other pages have been removed all applications in background closed, brightness set on 30% approximately finally android v is 2.3.3.
i fully charged the battery since 2 hours ago and the battery now goes to 93% please i need help about that and i downloaded juice defender today to test it
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Aug 11, 2011
Weird problem i had was i tried AP Mobile once just to try it and that was it. But after charging my phone last night after 1 hour it was down to 60% and was quite hot. I looked at battery usage and 80% was being used by AP Mobile and i couldn't stop it. I eventually stopped the program but it was still showing on Battery Usage (I'm not sure if that is an average over the day or is showing you what is being used at that moment).
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May 11, 2011
well every phone needs one right? and i just noticed a few things that this phone has that the s1 didnt, sooooin Voice Talk, turn off 'Wake up command', when voice talk is running, your microphone will be constantly on listening for you to call "Hey Galaxy!" (wake up command)double press home>menu>settings>voice talk settings>wake up commandturning vibration off, believe it or not, vibration uses more energy than max volumelimiting how much processor is used, an app like SetCPU can limit how much processor is used, and in what way, setting your processor to Conservative will increase battery life. turning off bluetooth and wifi when youre not using it will save unnecessary searches for signal turn off automatic background syncing make sure you fully close out an ap, either by hitting back till it closes, or menu>close poor or no signal will decrease battery life, as your phone will constantly be stressing to find a good signalif you really wanna go crazy use a solid black wallpaper, it wont use any LEDs at allont use live wallpaperssingle best thing you can do for your battery: turn brightness to 0, this is the difference between 6 hours of use, and 2, the s2 has an amazing powerful screen, and it will drain the battery if its maxed. download 'Brightness Level' an easy widget from the market used to quickly adjust brightness between when you want to show off, and when you want to be practical
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Mar 9, 2012
i just got the sgs2 a few days ago and am wondering how i can check if i have the latest firmware for it.
i also noticed the battery is drained fast on the phone. i have turned down the brightness and turned of auto sync
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Jul 16, 2012
for a few weeks my, c. 14 month old, sgs2 has been acting strangely. some days, the battery drains in just a few hours, sometimes saying charging when disconnected from charger, then saying it's stopped charging due to high voltage the screen turning on every 3-4 minutes when charging, voice input screen popping up even though it's turned off the clock/weather screen randomly appearing and other weirdness?
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Jul 6, 2011
i bought a galaxy s2 2 days ago and was blown away with it's performance....however the phone's battery consumption is very high i charged it to 100% at 2 p.m and it was down to 23% by 9 p.m...the battery life shows dat the screen is consuming abt 50% of the total charge and it is on for only 2.5 hrs...other proccesses (phone os,wifi..etc) are using quite less....however when left the phone for the night the consumption was abt 1%(used battery meter app)..
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Feb 15, 2012
I notice in some screen shots that people post that they have a Battery Level Indicator. I have seen these on the graphs from settings/about phone/battery usage.I don't have this indicator. The only time I see a battery level is when charging.
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Jan 1, 2013
I have been having intermittent problems with fast battery drain before and after upgrading my Samsung Galaxy S2 to ICS. In fact the reason why I upgraded to ICS is to see if it would fix it. Most of the articles I have read on the net are about people who have problems after the upgrade, which is why I am left puzzled. Often I leave my phone unplugged during the night and it has almost completely drained by the morning. here is some more information:
- In the battery stats my Android OS percentage is always high (60% +)
- I am always careful with trying to preserve battery life, for example setting the backlight to minimum brightness and closing applications which are running in the background
- I have gone for months where the battery has been fine, but cant seem to spot a trend
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Nov 12, 2011
I recently purchased my s2 and love it coming from a fist gen iPhone. Only thing is, I have been having trouble getting my phone to last all day. When I checked the battery usage it says Logcat is taking more usage then anything else including my screen. Ive never run this program, as apparently its for debugging code or something. I have searched around the net and only found one post that recommended factory resetting, in this persons case caused by a bad app.
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May 29, 2012
I'm new here, normally wouldn't post anything since I think I can find my own answers, but after digging through this forum I could not find anything that could bring my Samsung Galaxy II back to live, so here it goes..ot this phone yesterday from a friend who recieved a new one, so I thought i was being smart by trying a hard reset to remove all his settings/history/etc.. (I know now i need a usb restore as well, but...) I switched it off, and used Vol Up + Home + Power and it entered the downloading screen and i said: "Yes, reset this thing" it started downloading (I think) so i put it aside.. but I think the battery was running low because when i checked back a couple minutes later everything was black, and has been since.
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