The Truth About Your BatteryGeneral

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  1. KeithSr

    KeithSr Well-Known Member

    When I am at my country house, I have no service. If I leave my phone alone, it will suck the life out of my battery very quickly. I put it in "Airplane Mode", which turns everything off. Then I go back in and turn on my WiFi, as I have that at my home. I can go to my "Talkatone" app and use my phone over the internet and my battery is ALL GOOD. I still get my emails, but texts and sms do not come through until I go to town with "Airplane Mode" off.

  2. blenkows

    blenkows Active Member

    When I turned it on
  3. caffeinepills

    caffeinepills Member

    I seriously doubt everyone that has problems boils down to the idea that: it's 2012 smart phone, so of course it must use lots of power. That and there being so many bad batteries out there. I am thinking you are just turning 4G/3G off on to conserve your power since it was only active for 40 minutes out of 9 hours. That will make a big impact.

    For me, leaving the radio on takes up about 40% of total usage according to GSam (keep in mind in my city I get 4-5 bars for 4G constantly and WiFi is usually 4-5 as well). Have a few friends and they all have similar results with the radio at least.

    However, the radio isn't the biggest problem. I lost 21% in a total of 2 hours with just sending 5 texts. See attached images. I am not sure why the kernel is consuming so much battery. Anyone have ideas?

    Attached Files:

  4. Easilyamused

    Easilyamused Well-Known Member

    Hmm.. not quite what I expected. From what you've described,it seems to indicate it's related to the radios somehow.

    You could try disabling LTE, however this will lock you into 3g/4g HSPA+ and would not fall back to EDGE if you left a 3G area, but this would be done more to diagnose the issue rather than a permanent solution:

    [How to] disable LTE on AT&T S3 (you can disable HSPA+ too) - Android Forums at

    You could also try leaving Airplane Mode OFF, and just turning the data off and see how that changes.

    There is a fix over at XDA for the standby issue (it changes a file value from 34 to 3.4), but requires a rooted device (Don't have the original link atm but have the instructions saved in notes):

    On the XDA Developers forums, boasting the largest community of application developers and smartphone hackers, some users posted that the battery problem stems from the Galaxy S3's standby feature. They said the file on the smartphone that contains the drain value was wrongly set when the device shipped. This file, known as the framework-res.apk, was set at 34mA when it should have been set at 3.4mA.

    For an owner of the Galaxy S3, this means the phone may incorrectly display a 50 percent to 70 percent battery drain, as Auto-O-Mobile has pointed out.

    Users experiencing this problem can fix it by changing the power_profile.xml file located in the framework-res package. To do this, complete the following steps:

    -- Download the updated file (510kb) from MediaFire.

    -- Save the file on your microSD card or internal storage.

    -- Reboot your Samsung Galaxy S3 into ClockWork Mod (CWM) Recovery Mode.

    -- Choose "Install zip from SD card" and select the downloaded file.

    -- Reboot your device. This should solve the battery drain issue.

    Of course, there is a possibility this process could lead to a voiding of the device's warranty.

    Samsung has not officially acknowledged or commented on this problem. It is most prominent in the international version of the device, and it does not affect all U.S. Galaxy S3 smartphones. The issue does not affect the LTE version at all, according to Software And Study.
  5. neatheyc

    neatheyc Member

    I installed that sambattery app you have and it is constantly saying my phone radio is 65 - 70 %.

    Any ideas?
  6. Easilyamused

    Easilyamused Well-Known Member

    take a look at this thread and see if it relates to your issue:
  7. Easilyamused

    Easilyamused Well-Known Member

    Oh, also try this: Go in to settings then to the Wi-Fi area, then select advanced and make a small change by turning off connecting to Wi-Fi while you
  8. Mohaver

    Mohaver Active Member

    Normal things (at least I think so). Right now a process called "System (*wakelock*)" is taking up 24.5% of the system. It's info details 81.0 wake locks, keep awake for 39m 28s and CPU usage 24m 47s. Included Processes are "*wakelock*" and "mediaserver." Phone Radio is using 18.2%, Screen is using 12.7% and Held Awake (going on for 4 hours 52 minutes) is taking up 2.0%. The other processes are less than a percent. Also Google Play Music has used 9.1% of the battery lost and has 726.0 Wake Locks :confused:. It's Keep Awake is 31 minutes, CPU Usage (minus foreground) is 7 minutes and CPU Usage is 8 minutes. Not sure how to add screenshots from my phone to this post without uploading them to another website, but I have screenshots if someone can tell me how to add them. Thanks for the help!
  9. Easilyamused

    Easilyamused Well-Known Member

    It could be you have so many media files scanning them is causing a drain. There can be a file corruption problem causing excessive drain. It's not limited the S3, rather ICS. A corrupt file can cause the Mediaserver to go in to a loop scanning your sdcard.

    You can create a
  10. jp76

    jp76 Member

    I thought my battery was doing well as I made it through 2 days without recharging...though admittedly I really didn't use it much. However, this morning I've lost 10% of the battery in 2 hours and the phone "reset itself" or something similar. Also, why is "Android System" using up a ton of battery now?


  11. Easilyamused

    Easilyamused Well-Known Member

    Select "Android System" and it will give you more details, as well as what packages are included:


  12. pfp_az

    pfp_az Active Member

    It looks like you may be having the same issue I was (still am sometimes). See here:
  13. caffeinepills

    caffeinepills Member

    Yeah I checked that and didn't really see it in the top of the process lists. I had a process related to wifi constantly in the top.

    Also your post is misleading. You only had your radio on for only 39 minutes out of 9 hours 40 minutes. I tested disconnecting mobile data and wifi; still had the radio statistic going in GSam. The only way I got it to stop like yours was airplane mode. In other words, airplane mode is definitely a way to get good battery life, but kind of defeats the purpose of having a phone when you can't use it as a phone.
  14. Easilyamused

    Easilyamused Well-Known Member

    Take a look at this thread:

    Not in the least. If you read the post, you'd clearly understand the screenshot was illustrating the effect of leaving Wi-Fi and Bluetooth on the entire time (9hours 40 min) is so trivial as to be inconsequential in regards to overall battery time. Without it listing the incorrect radio stats, the rest of the information reported is actually more accurate.
  15. rushmore

    rushmore Well-Known Member

    When using data:

    If in decent to great signal areas, the battery is great. If in weak signal areas, the battery is awful. That is my experience.
  16. SUroot

    SUroot Well-Known Member Developer

  17. KeithSr

    KeithSr Well-Known Member

    My battery does pretty good. I have an extended battery, the Qcell 4200, but unless the stock battery goes bad, I will not be using it.

    Attached Files:

  18. dbpaddler

    dbpaddler Well-Known Member

    Isn't that pretty much with every phone? It's the reason I returned the Photon Q. Couldn't pop in a fresh battery after hours in a bad signal area sucked the phone dry.
  19. So I'm more than delighted with my GS3 its a thing of wonder and as crazy as it sounds I can't remember life before I got. Anyhow I know alot of people have or have had issue with the battery but I think I've managed to find a state of zen with mine.

    I had been noticing that if I left my fully charged phone by my bedside while sleeping I'd wake up and find the battery had fallen to between 65%-85% during the night. That seemed like a whole lot of battery to lose considering I wasn't using it and I'm sure many people would agree.

    I also found that through the day at work I was losing at least half of my battery power and the only thing I was doing was texting because the 3G in my office isn't particularly good.

    It was really getting on my nerves because I was finding this was happening alot and I didn't feel the battery was performing as well as it could. I read alot of threads on this forum and watched a few videos on YouTube and tried a whole combination of things.

    So the thing I've found to work for my particular circumstance is to switch off WiFi, GPS, Mobile Data and Syncing during the night and also when I'm at work through the day. Last night my phone was at 100% when I went to bed and I woke up this morning at 5.40am with it at 98% which I was very pleased with.

    I listened to some music on the way here and sent text messages to some people, I then turned off all the aforementioned things when I entered the office, turned them on to check emails and social media during lunch and at this current time (2.30pm) my battery is at 85%.

    I didn't realise how much mobile data can drain the battery and I suppose that was very ignorant of me but hey I'm a newbie and I'm still learning.

    I know its not always that simple but I thought I'd share my experience in the hope that it may help some of you save that very precious battery power. I'm hoping to keep the phone off charge to see how long I can get from it.
  20. Easilyamused

    Easilyamused Well-Known Member

    turning Wi-Fi and BT off does nothing for you, nor syncing really if you have it set up properly. mobile data is what is using your battery. since you are in a poor 3G area it will use up more than normal (the weaker the 3G signal, the more battery power your radios will consume).
    _GalaxyS3 and KOLIO like this.
  21. KOLIO

    KOLIO Guides Guide


    I've found this to be true,a weak 3G signal is equivalent to pulling the plug on a sink drain.
    Even streaming music over a solid data connection seems to have little battery drain, only when the signal is weak or disrupted constantly.
    So, enjoy the features that make a smartphone smart & install a good battery monitoring app. Then, take a look @ it first thing in the morning & see if any installed apps have been keeping the phone from sleeping & draining your battery.

    I myself use GSM BATTERY MONITOR, as it provides a lot of information w/a nice U/I to make deciphering the battery usage a breeze.
    TheClammer likes this.
  22. Yup I would agree with that I tend to use WiFi in the house a fair bit but I got the feeling the crappy 3G was a big factor in the drainage.
  23. johnnylighton

    johnnylighton Well-Known Member

    If you have wifi on, and are connected to a local network, does the phone still use mobile data? If so, for what? Thanks!
  24. Mostly Harmless

    Mostly Harmless Well-Known Member Contributor

    I don't know if that's true. With Wifi on the phone is constantly searching for available networks and I believe that takes power to do so, same goes for BT. It certainly doesn't hurt to have them off when you aren't using them.
  25. CDPlant

    CDPlant Well-Known Member

    Not, when you connect to wifi the mobile data turns off automatically

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