1,Feel good, no mistakes or discharge accidently. Install and play, no lock screen opening required. 2,lock screen opening required. Made of high quality metal material, no power supply and driver needed, easy to use, high precision, high sensitive. The Joystick gives you a real physical joystick for increased precision with touch screen based games, greatly increase your game score easily. 3,The reaction is extremely sensitive just like the speed of electricity. Tap gently to shoot without shaking your phone. Shooting is more precise. 4,Suitable for a variety of mobile phone sizes, 2 springs to stretch, more stable. Supported Games but not limited to: Rules of Survival, Survivor Royale, Knives Out, PUBG Mobile, Critical Ops. The position button can be turned up to meet the needs of the game. 5, Independent left and right handle design, Lightweight and portable, easy to carry.