Install our product according the mark on the product"R=right","L=left"2:Open your Game and and press "Settings"-"Control"-"Customize".adjust the position to suit for your phone.3:Change your set in your game which could choose the right to connect our metal sensor. Note: When the installation is completed, you need to lock your screen, Start game again and then these buttons will work normally. According to different mobile phone models, It may have position deviation shown in the picture, please adjust your button in a comfortable way. The game handles quick keystroke assist You will have enough reaction time when you shoot your enemy. This controller will help you improve the gaming experience and win the game easily.