The double-click joint mode of Redmi K40 Pro is realized by touching the keys at the bottom of the screen. If you want to turn off the double-click joint function, you can follow the following steps:

1. Open the settings application of the mobile phone.

2. Click Buttons and Gestures.

3. Find the "double-click joint" option, and then click Enter.

4. On the "Double-click Joint" page, you can see the "Double-click Joint" toggle button. Switch this button from the open state to the closed state to close the double-click joint mode of Redmi K40 Pro.

Note that after double-clicking joint mode is turned off, you can no longer switch applications by double-clicking the touch button at the bottom of the screen. If this function needs to be turned on again, just follow the above steps to find the "double-click joint" option and switch its switch button from off to on.