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How To Increase Samsung Galaxy S2 I9100 Battery Life

Samsung Galaxy S2

Samsung’s flagship device was announced by the South Korea-based company on February 13th at Mobile World Congress event in Barcelona. Since May 2011 when Samsung Galaxy S2 hit the market, the Asian phone shipped millions of devices. But many of the Galaxy S2 owners have complained about the battery life of their device.

Samsung Galaxy S2 features a 4.3-inch Super AMOLED Plus display protected by Gorilla Glass coating, a dual-core 1.2 GHz Exynos Cortex A9 chipset, 1 GB of RAM, 16/32 GB of internal storage extendable with up to 32 GB via microSD. Galaxy S2 also features an 8 megapixel camera with autofocus, LED flash and full HD video recording capabilities, while the secondary user-facing camera has a 2 megapixel optical unit.

The battery meant to keep the Samsung Galaxy S2 awake is a Li-Ion 1n650 mAh unit. Fortunately there are some tricks that can help you improve the battery life of the Samsung’s Android-powered flagship smartphone. Here’s what you will have to do in order to improve the battery life of your Samsung Galaxy S2.

Samsung Galaxy S II I9100 Big Battery Eaters

The high-end smartphones, like Samsung Galaxy S II I9100, have a lot of features that eat a lot of battery. Functions like Camera, 3G, WiFi, Bluetooth, GPS and Sync are the biggest battery eaters of Samsung Galaxy S II I9100, but fortunately there are some simple ways of stopping them drain your battery fast. As you’d probably expect turning them off is the best option if you want to increase your Samsung Galaxy S II I9100 battery life.

We recommend you to choose the GSM only option for your Samsung Galaxy S II I9100 and activate the 3G only when you are using it. Also don’t choose the automatic network mode, as the battery will drain even faster, mostly because your device will constantly search for 3G network availability. To switch your Samsung Galaxy S II I9100 to GSM only you will have to go to Home > Applications > Settings > Wireless and Network > Mobile Networks > Network Mode and choose the GSM only option by tapping on it.

Also turn off the WiFi when you are not using it, as its a major battery eater, too. Go to Home > Applications > Settings > Wireless and Network > Wi-Fi settings and uncheck the “Wi-Fi” option to disable it. Do the same with the GPS, as your Samsung Galaxy S II I9100 will constantly try to lock up your location if enabled, reducing your battery life. Disable GPS by going to Home > Applications > Settings > Location and security and tap on the “Use GPS satelites” option to uncheck it.

Also try not to use the Camera too much, as it drains the battery pretty quick. Also remember to always close the camera application after you use it. We also recommend you not to use the Camera when your Samsung Galaxy S II I9100 is low on battery, because it will soon eat the rest of it.

Samsung Galaxy S II I9100 Display Brightness

The brightness of your display is another factor that drains your battery. Even though Samsung said that they optimized their Super AMOLED Plus for Samsung Galaxy S II I9100 and now it is 18% more battery efficient, the display installed on your device drains about 40% of the overall battery life. As you probably know, the brighter the screen the more battery is drained, so keeping your screen brightness to a minimum should significantly extend your Samsung Galaxy S II I9100 battery life. The “Automatic brightness adjustment” setting is not the best for your Samsung Galaxy S II I9100 battery life, as your device will have to constantly set the screen brightness lower or higher depending on light conditions. Choose the screen brightness manually and try setting it as low as possible. To do so go to Home > Applications > Settings > Sound and Display > Brightness and choose the brightness level you desire. Also make sure that you uncheck the Automatic brightness adjustment option.

Samsung Galaxy S II I9100 Android Power Widget

Fortunately Android OS offers some ways to increase the battery life of your smartphone. And becaus Samsung Galaxy S II I9100 is running on Android 2.3 Gingerbread, you will be able to use Android widgets to control the major battery eaters. One such widget is the Power Control widget, which will help you manage functions like WiFi, Bluetooth, GPS, Sync and Brightness. The Samsung Galaxy S II I9100 Power Control Widget is easy to use and will help you enable or disable the big battery eaters with a simple tap. To install Power Control Widget, long press a clear area on any of your homescreens. The “Add to Home screen” window should appear on your Samsung Galaxy S II I9100 display. Now go to Android Widgets and locate the one called Power Control. Tap on it and place it on any of your homescreens.

Say No To Samsung Galaxy S II I9100 Live Wallpapers

I know that you like your Samsung Galaxy S II I9100 looking cool and the live wallpapers help a lot. But the live wallpapers also drain your battery faster. So, if you want to improve Samsung Galaxy S II I9100 battery life all you have to do is set a picture that is not animated as wallpaper. But lighter wallpapers also eat more battery, because your Samsung Galaxy S II I9100 will have to light up more pixels in the bright areas of the pictures, which will automatically drain your battery faster, so the darker the wallpaper the better the battery life of your device.

Do Not Use Third Party Task Killers

As you probably know Samsung Galaxy S II I9100 comes with multitasking, and sometimes the users keep lots of applications running in background. Fortunately, Android comes with a built-in task killer which will help you close all the apps running in background. The latter Android firmwares were optimized to automatically kill the unused apps in multitasking that drain your battery and fill your RAM. On the other hand the third party task killer apps are constantly checking the applications running in multitasking, a process that makes your battery drain faster.

Samsung Galaxy S II I9100 Battery Maintenance

Most of the smartphone users neglect the battery maintenance aspects. But keeping your battery in proper shape will increase the battery life of your Samsung Galaxy S II I9100 and also keep it healthy on the long run. Here are some tips that will help you maintain the Samsung Galaxy S II I9100 battery in proper shape:

  • All the batteries have some golden metal parts at one end, which are the contacts that send power from the battery to the device. Clean the Samsung Galaxy S II I9100 battery contacts with a dry cloth once in two month.
  • Try not to pull out Samsung Galaxy S II I9100 battery too often, as this will loosen up the contacts, and the power will not be sent to the device with the maximum of efficiency.
  • Use the original AC charger. If by some reasons you are buying a new charger for your Samsung Galaxy S II I9100, go for the genuine AC chargers, as they are optimized for your device’s battery model.
  • Do not charge your Samsung Galaxy S II I9100 using the USB data cable, as this might spoil your battery. The power voltage in your computer’s USB slot is alternating and this is why is not recommend to use it for charging your device.
  • Always charge your battery when the battery level drops below 10%, as the batteries are built to store the maximum power when bellow the 10% threshold.
  • Don’t place alien objects in the Samsung Galaxy S II I9100 battery compartment. The battery emits heat, so this makes the battery expand, and it will need room for this.
  • Try not to expose your Samsung Galaxy S II I9100 battery to extreme temperature conditions. Whether it’s extreme cold or heat, doing so will ruin your battery right away.

We hope that the information on how to increase Samsung Galaxy S II I9100 battery life were useful to you. After running some tests on a Samsung Galaxy S II I9100 we managed to extend the battery life with about 30-40%. Anyway choose the advices that suit the way you are using your Samsung Galaxy S II I9100. Please let us know how the tutorial worked for your device’s battery life in the comments section below.

Samsung Galaxy S2 Articles

  • ionhit

    nice and very helpful

  • Abhijit

    very nice and helpful tips and tricks, thanks.

  • John

    Please provide information on how to close apps that are consuming power.

    • Gabi

      If you read the section “Do Not Use Third Party Task Killers” you will find the answer.

  • Dhibu

    if i disable all these things..no need to buy a S2

    • jazz

      then don’t buy it.

  • hard killer

    Fantastic awesome..no words…thank you for this…

  • Juvilyn D

    wow, I was having this problem and decided to search for solutions in your site… it was too intense that i could not even use the phone even if it is charging, it will always turn off… after doing the GMS only option, it worked! although, I have to research yet on what is the difference between that and the other option. Thanks so much!

    • Eric

      The difference with the GSM only option is that you are using the battery for the display and not the mobile network to update or download any apps, emails etc. If you check the Settings -> Battery options you will see that no other network settings have been draining the battery, only the display and other android system variables. Fantastic tip above Juvilyn!

  • khan

    i have one new samsung galaxy s2 my phone battery power very low why like that just 1 week ago i buy

    • jazz

      you’ve been made dude

  • Eric

    I think the above article is superb from Liviu Anca. I was suddenly getting just 16 hours of standby time from my S2 last week, but after changing the mobile networks settings for the GSM only option above, I am only 20% down on my battery from a full charge after 45 hours and counting on standby so far! No need to purchase an ugly, heavier extended life battery this year. I need to fly abroad and this is quite reassuring to know that such thin power intensive smartphone can be so economical with its power settings adjusted in suh a subtle way.

  • Chris

    I just bought Galaxy S2 and the battery would be bellow 50% after a few hours. My battery widget said 80 to 90 % for the screen regardless of any brightness changes or how long the screen was set to be on for. .
    I bought an APP called Easy Task killer , I have Google 4.0 ice cream sandwich and was not sure it would work. i tried it and the phone has been unplugged now over 15 hours and it still reads 66% Now in my battery app the screen is showing only 24% even with the same settings. The phone works better too let me know if any one else has tried thsi

    • jazz

      define few hours?

  • m.b

    It’s seems to me that your describing how to make the sg2 into a nokia 3210.

    Instead I would prefer to upgrade the battery.



  • MicHaeL

    Yea, as others have said, it basically means that the phone just sucks and it forces you to put aside a lot of functionality to actually use it for long enough.

    I know this phone and article are old and all, but I’m currently messing around with this phone (as someone had it left over and I just needed sóme kind of communcation-device), but the battery is just draining in front of my eyes. I can literally sit and watch the battery-meter go down by 1% every few minutes without it even doing anything. There’s no connections to Wi-Fi or anything else, there’s not even a SIM-card in it, there are no apps running, I’ve turned on all the battery-saving features… And after it having charged all night, it just ate away 10% of the battery being in standby and a little browsing for settings…

    What a piece of crap, really…

    Granted, it does run Android 4 instead of 2, so possibly it needs more power, I’m not sure. But still… This is horrible. And another percentage has drained with it just doing nothing while I’ve been typing this comment. That’s bullshit…