The battery of my Samsung Galaxy S4 drains in few hours. I need to know useful solution to save battery for prolonged usage – how can I get more life out of my phone?
Manipulating the screen brightness :-
When phones runs with bright display,it needs much more power from battery to power up those pixels on the display unit.Choose it to set it to " Automatic Mode " so that it sets the screen brightness via use of ambient sensor and thus saves battery.
Setting up a proper screen timeout,can save battery.
Turning off Bluetooth, GPS, 3G,Wi-Fi when not required :-
When not using such features and the phone is idle,Bluetooth,Wi-Fi and GPS must be turned off as they constantly use battery power to search for devices,satellite and Wi-Fi hotspots in case of Bluetooth,Wi-Fi and GPS respectively.
Turning off 3G would be useful in areas where its network is weak or not available.The battery spends much more energy when it's left on while searching for a network.
Use Airplane mode when there is no network at all at places you know.
Using apps :-
With smartphones performing many tasks,they also need to have some sort of battery management apps which understands the working of their respective OS on which they would run.
In the case of Android,there is a term called Wakelocks,which is made to keep the phones resources active.This is necessary for in the case of Email and other important apps.But some badly coded apps needs to be managed and must not be allowed to use it.For this,Wakelock Detector app must be used,which shows up the apps which causes the wakelocks so that they can be treated.
Also, Juice Defender [Broken Link Removed] app is also useful.
Turning off background Syncing when not needed :-
Smartphones uses background syncing so as to allow apps to sync.But this can be cause of battery drain when it does more.If one doesn't feel urgent or is in place where phones are to be kept silent and must not be attended,there is no need to keep sync enabled.
Using black background themes,wallpapers etc. on AMOLED screens phones :-
The pixels of AMOLED displays emits their own light.When black background or wallpaper is used,they are not emitting light,so it saves battery.
Battery saver apps can help, but to be honest, if you do not set it up properly and keep the settings in check each time you install new apps, it will give you performance issues or some apps will stop running in the background and you may not receive notifications (like for Facebook or certain email apps) because it will not allow the apps to sync with the servers. Task killers are the same way. If you can learn how to use them properly, then they will be a great benefit. If you forget about them or do not set the apps up properly, expect some issues to occur. These are the reasons that there are so many debates about these apps.
There are few things which you should care. You need to turn of Wifi, Bluetooth, GPS and data connectivity if not in use. You can also install battery saving apps..
You can find few nice battery saving apps for your smartphone here
you can also read battery saving tips here:
easy... just few steps u will notice a significant battery life improvement
My phone battery lasted only 5 6 hours and with these i now use it almost a day without charging.
1. decrease the screen brightness to 10%
2. Stop background data sync and enable only if u want, manually entering to settings and disable after using it.
3. Disable 3G and wifi when u are not using it.
4.put the phone into air plane mode if the signal is law.
there is some applications which do some of those automatically
but my experience is using those softwares makes my phone battery life even shorter..
Just use the power saver mode that comes with it. It should be able to last you thru a day.
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Try extended battery perhaps from eBay
There are several things you need to check to see if they are on or not, and whether the features you actually use or want to use. First off, the screen brightness should be at a reasonable brightness as this can be a major impact on battery performance. The Smart Stay and other "Smart" features should be turned off unless you really use it (half the time the Smart Stay feature on my Note 2 does not keep the screen on for me while I am reading the screen, but drains my battery). These features use your front facing camera and proximity sensor in order to work, which drains the battery. Also, set the screen time out to a reasonable, but relatively short amount of time (no more than 30 seconds, but 15 would be better). Make sure the Wi-Fi, Bluetooth, and GPS are turned off when not used since they drain the battery quicker as well. S Voice is a nice voice assistant, but also can drain the battery since it uses the microphone and processing power to "listen" for your voice. So not use a live wallpaper, unless it takes the function of several widgets like the clock, battery gauge, etc. like the Device Info EX Live Wallpaper. I would also look into recalibrating the battery so that it can reset the battery gauge. I had to do similar, but with a calibrator app that requires root, recently because my battery would drain very quickly, but recharge extremely slow. Using the calibrator app fixed the issue): http://forum.xda-developers.com/showthread.php?p=18600161. After making sure the settings are set appropriately, certain features are turned off, and the battery is recalibrated, then I would look into using a task killer such as Advanced Task Killer to automatically kill known processes that could be or should be killed. Make sure to set important processes to be ignored from being killed. Also, if you don't use or don't need an app, uninstall it. This can help improve performance as well.
First and foremost, the screen! That's really the most battery-wasting part of the phone. Reduce brightness and use the phone (the screen) as sparingly as possible. That alone should do quite a bit for your battery life.
Next, there's background data sync. You can try something like Greenify or Battery Doctor to disable background data, and that can help.
Finally, there's undervolting and underclocking the device, but that might have a negligible impact only, and is quite advanced. Good luck!