How to set voice control language
Here, are the steps that has to be followed in-order to change the language that has been used by Voice Control.
The first step require you to select Settings from the iPhone SpringBoard and now tap to choose General from the list of Settings Categories
The second step require you to tap in-order to choose International from the General Settings menu
Now choose Voice Control from the International Preferences menu
Tap to choose your desired language from the Voice Control screen.