How to See Kernel Version on HTC One
If you want to root your Android device, or install custom ROM, you need to know Kernel version, Baseband and Build Number of your phone. ON HTC One ...
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Other than Power Saving Apps, Samsung Galaxy S4 has a built in Power Saving mode and you can enable CPU Power Saving, Screen power saving, Turn off Haptic feedback. Power Saving Mode is enabled by doing as follows:
1. Open "Settings" app
2. Go to "My Device" tab
3. Enable "Power saving mode" and tap on it
4. On the opened menu, you have 3 options:
a. CPU Power Saving: Limit the maximum performance of the CPU
b. Screen power saving: Use low power level for screen
c. Turn off haptic feedback: Turning off haptic feedback can extend battery life
** if you tap "Learn about Power saving mode" you get familiar with some useful tips regarding the issue
See: Useful Tips to Save Battery on Android
Read More Galaxy S4 Tips and Tricks