How to use Put your own phone in it, and Bluetooth is used. Simple and convenient, supports a variety of games. Note: Matters of Caution When you test the keys and find that the M2 key is no any responds, don't worry, it is not broken.It's because that the M2 key is designed for gunfight games to adjust the speed of the joystick, which needs to be used in the V3 software and not every games support this function.In the V3 mode, hold down the M2 button, the joystick will slow down, release the button, the joystick will back to the original state.In gunfight games, this function is good, when you pick up the gun to aim, the speed will slow down to help me aim at the target.If you find the controller can't be turn on when you first use it ,You can use a needle to insert into this hole to reset the gamepad. The controller will be re- active. Description of application: 1. This product adopts ergonomic design and feels comfortable.2. With stretch and shrink function, it can stretch and store mobile phones with different lengths of 135-173mm.3. Bluetooth 5.0 ED / ble connection is adopted, and the controller is connected with mobile phones and other hosts through Bluetooth.4. It supports shootingplus V3 app, which can be downloaded through various mobile application markets.5. Support Android and Hongmeng hid standard mode, and can play all kinds of game hall games that support HID standard mode.6. Support systems above Android 6.0 (i.e. shootingplus V3 Android mode).7. Support multiple touch of IOS 10.1 to 13.3.1 systems (i.e. shootingplus V3 IOS mode);Support single touch for IOS 13.4 and above systems8. Support MFI games for systems above IOS 13.0. MFI games can be downloaded fromShanwan MFI app.9. PS3 /PS4/ switch game console is supported to play games with Bluetooth connection, but there is no gyroscope function.10. Support Bluetooth connection of windows 10 system laptop and play X-input games.11. Support USB cable and can play PC / PS3 / switch games.12.In other modes, M1 and M2 can set back key, single key and macro.13. The key is equipped with cool LED backlight (pre R3 + at the same time to turn on or off the key backlight).* Due to the problem of mobile phone system, some mobile phones may not support this device* Some games cannot be connected to this product due to irresistible factors such as software upgrade or source code change of the official game platformOur company is not responsible for the operation. Our company reserves the right of final interpretation. Game Effect