Why is my iPhone in a different language?
Go to Settings > General > Language & Region. Set the following: The language for iPhone. The region.
How do I change the language back to English?
If you don't see the Language option on any app's settings screen, you probably just don't have multiple languages installed on your device. Head to Settings > General > Language & Region and ensure you have more than one language on the list. If you don't, the per-app Language option won't appear.Sep 24, 2019