How to Enable Power Saving Mode in Galaxy S4
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 ...
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One of the easiest way to save some storage on Android devices is to clear the apps' cached data. to delete the caches for all applications and clear cached data on LG G4, do as follows:
1. Open the Settings application
2. Scroll down to Device settings and tap the Storage option (if you are on the Tab view, go to the General tab and find the Storage option under the Phone Management settings)
3. Now under the Internal Storage details, tap the Cached Data option
4. On the opened window, confirm to clear caches