No this is not possible - user can only change their language in the settings.
However you can give the user an "English" keyboard if you choose (or ask them their preference)
you do this using: UIKeyboardTypeASCIICapable
You can change keyboard directly on the keyboard by pressing "globe icon" on the bottom row.
First, you have to enable those language for input in Settings. Then pressing the globe button on the keyboard would toggle between those languages.
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