Synchronize the current app locale with iOS "Preferred language" in App Settings?

[ahmtydn]

In my iOS application, I have 'Suggested Languages' in App Settings as EN and TR.

context.setLocale(Locale('tr', 'TR'))

The app is immediately localized to TR, but in iOS Settings, the 'Preferred Language' remains set to EN.

How can I synchronize the current app locale with the 'Preferred Language' in iOS Settings?"