Some smartphone features are not supported by Samsung DeX.

The following features are unavailable while Samsung DeX is operating. They can be used on your smartphone screen after closing Samsung DeX.

  
● Some menus provided by the Smartphone Settings app in Samsung DeX may differ or be non-editable. 
● While operating on Samsung DeX mode, your device screen may get locked and in such case the panic button feature would get disabled. 
● The Samsung DeX lock screen doesn‘t support the [Emergency call] button. 
● You can‘t enter Samsung DeX in the following modes, which can only be opened after you disable the relevant feature in the Smartphone Settings app.
▷Medium power saving mode, Maximum power saving mode, Performance mode, Emergency mode, Safe mode, and COM (Container Only Mode).