Compatible mobile phone sizes
NOTE: REMOVE THE CASE BEFORE USE. Mobile phone thickness: less than 10mm Mobile phone width: 66mm-85mm Mobile phone length: less than 170mm
Compatible mobile games
Games whose virtual buttons can be dragged
Power On/Off
The power switch is controlled by a lever. Power-on: pull the lever, the F4 controller is turned on, and its 2 indicators light will be on in green, then will be off after 5 seconds. Power-off: when the lever is fully retracted, the F4 controller is turned off.
Layout

How to install

Turbo mode

Off-screen correction
During using, if the button or F4 controller does not work properly, try to turn the mobile phone screen off and then on to fix the problem.
Battery indicators
Low battery: When the F4 controller’s battery is lower than 10%, the 2 indicator lights will flash red quickly. Charging: the 2 indicator lights will flash red slowly. Full battery: the 2 indicator lights will stay on.