Storage space running out. Some system functions may not work

The error had been troubling me since long. Finally I managed to find a solution.

Enough of deleting log files and creating space by uninstalling applications. If you facing similar issue, all you need to do is delete your Dumpstate memory.

Dial *#9900# and choose the option Delete Dumpstate/logcat

If your problem is solved, don't forget to say thank you in the comments.

One more tip: If you are tired of your battery problem, click on Low battery dump and switch it on.