1. Before turning on the F8 gimbal, you must place the phone and keep the phone horizontally balanced, and twist the balance knob tightly (if you turn on the F8 without the phone or turn on the F8 without the phone horizontally balanced it will cause abnormal vibration or shaking of the F8).2. F8 is connected by Bluetooth through the phone and does not support extra APP. It can work perfectly with mobile phones to take stable and smooth photos and videos. Support for iPhone, for Samsung, for Galaxy, for Huawei. This allows you to capture more compelling images with the panoramic mode and the intelligent track. You can easily change the mounting direction horizontally or vertically.Easy To Use: Easy to operate and does not require an app. Note: F8 does not support APP. It only supports a Bluetooth-compatible connection! One Key Operation F8 works after connecting Bluetooth-Compatible in smartphoneNotice: the Bluetooth blue light is always on when BT is connected. Support for Online Living / Dance Filming / Online Streaming /Parent-child lnteraction / Extreme Sports / Outdoor Activities / Wedding Fiming Newest Anti-shaking Technology Meet the need to shoot while walking, keep the picture balanced and smooth, and quickly shoot beautiful photos. 3-Axis Stabilization Anti-Shakfor a More Beautiful Shot Enhanced stability gimbal for a smooth recording and live streaming experience inception / Dolly Zoom Master shooting style, the lens rotate automatically to get the video like movies; Triple hit the trigger button to switch the head holder to inception mode. Auto-Calibration Can Record Horizontal and Vertical Tilt the head vertically to the right for 65", then switch to vertical shooting. Perfectly for Various Smartphone Suit for a smartphone with Wide Phone width <85mm (Max.)Allowable weight <250g(Max.) 4-6 Hour Battery LifeRecord Worry Free F8 build-in 2200mah Li-battery. It runs up to 5-10 hours.You can easily handle the demands of continuous filming during a long journey. Mode description After startup, the default lock mode is fully locked. Push the M mode button up to switch to half-follow, and then push the M button up to switch to FPV mode.Fully locked: the motors of the three axes are in the locked state, and the lens direction of the mobile phone can be controlled by the remote rod. The fully locked mode lights up.Semi-follow: the motor of the heading axis rotates along the direction of the handle, and the engines of the other two axes are locked. The semi-follow mode lights up.Full follow (FPV): the engines of the three shafts will turn together with each Angle of the handle, and the full follow mode light will light up.Inception: Tap the trigger button three times in succeion to enter advent, then the red light next to the Bluetooth will be on after entering Inception, and the red light will be off after exiting Inception.