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How to turn off desktop shortcut keys in K40 system upgrade?

How to turn off desktop shortcut keys when upgrading the system is as follows:

The first step is to open the settings of Redmi Express 40 mobile phone and click the desktop.

Step 2, enter the desktop settings page and turn off the switch on the right side of the assistant.

That's all the buttons on the off screen of Redmi k40 mobile phone.