Keep Clean - Junk Booster is a very useful and handy application you can download to help you managing your phone space and storage!

It can help you through cleaning: cache, app installation packages, uninstalled app residual files, junk files, background apps that are still running to reduce memory usage.

Additionally, you can use it to turn on power saving mode to reduce background running memory.

You can expect a thorough Cleaning in which it will clean up residual files caused by incomplete deletion of other files, applications, and packages from uninstalled ones.

It won't just clean the memory of your built-in phone storage but also you can use it on a memory card inserted on your phone!