READ ME. In order to apply this skin, you must have the app "TSF Shell Launcher 3D" installed. Follow for more themes: Check all my themes: INSTALL: 1-Download Flat theme from google play. 2-Install Flat and open it. 3-Follow instructions. If you have any problems with installation or you find any bug, please contact me so that I can help you ojaguo0@gmail. com. Thank you!