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Once you find the appropriate launcher, you can just install it on your phone. Once the installation is completed you will be presented with the option to choose between the default TouchWiz and your newly installed launcher. This menu also will allow you to set the default launcher or choose which one you will use.
How to change the home launcher?
In this example assumes that you have set the third-party launcher app as the default. The following are the steps to do so:
- Go to Settings.
- Tap Application Manager.
- Swipe to the All screen.
- Tap the newly installed launcher app.
- Tap Clear default button.
- Tap Home button, then you'll see the "Complete action using" menu allows you to set the default launcher and choose which the installed launcher you wish to use.
Well, above is the steps to switch between the installed launcher is on the phone through the settings menu. You can also use another third party app through the Google Play Store, such as Home switcher / manager app to switch between installed launcher app on your phone. So, Hope this helps :)