1. First find it on the phone page and click the "Settings" button. 2. Then scroll down the screen in the opened "Settings" page and find the "System" option. 3. Click to enter the "System" page, where you can find and click the "System Navigation Mode" option. 4. Then scroll down the screen in the newly opened page to see the option of "floating navigation". At this time, the word "Close" is displayed on the right side of "Floating Navigation". 5. Click the "Close" position to enter the setting page of "Floating Navigation", open the switch button on the right and open the floating window on the mobile phone.