It is a normal behavior when you use Samsung Galaxy or Note for more than a year, the phone started to run slow, freezing, crashing or “Force Closing” for some applications or just shutting off and returning you to the home screen.
This process could solve the problem and doing this once a week could prevent it from happening in the future.
In this video, it shows the real time recording of “wiping the Cache Partition”.
If you already done this process and the software on your phone is still having issues, you may need to backup your contacts, pictures, etc and do a Master reset.
Video by Youtuber: Phone Tech