If you accidentally changed the language on your iPhone, this tutorial will help you with pictures, step by step, how to change the language on iPhone or iPad.
When you have a device iPhone or iPad in a language you don't understand at all, it's best to orient yourself by the images in the tutorial below.
How to change the language on iPhone or iPad? Tutorial with images
To change the operating system language iOS or iPadOS, go on your device to: Settings → General → Language & Region.
2. Next, you need to add the language you want the iOS OS to be in, then set it as the primary language for iPhone or iPad.
Add Language → Select language → Use New Language.
After setting the new language, the device will restart to apply the language changes, then it will display the language you set.
This setting will change the language in which operating system menus, notifications, and options are displayed iOS or iPadOS.