How to get rid of TouchWiz: De-skin your Samsung Galaxy smartphone
The problem is many people consider TouchWiz to be a bit of a system hog that makes Samsung phones, especially older models, feel slow and sluggish.
While software updates have improved TouchWiz, the lure of a custom or stock Android experience is too tempting to pass up.
Cover it up
The easiest and most straightforward way to get rid of Touchwiz is to simply cover it up by installing a third-party launcher such as Nova Launcher or Google Now Launcher.
As long as your phone is running Android 4.1 (Jelly Bean) or later (check in
About), all you need to do is download and install the launcher from the Play Store – no factory reset or root required.