Now, you can change the language of an individual app without changing your primary system language. You no longer have to completely convert your default or primary system language to change the language of a single app on your iPhone.

Starting with iOS 13, there is now a way to set an individual language for each app. iOS 13 enables users to change the language of a specific app. In iOS 13, you can select it in the settings. In the Apple Settings app, open the settings of the specific app, and select the language under "Preferred Language". You can select from the languages that the app supports.
It is necessary to programmatically change the selected location. How to Change Language of Specific Apps in iOS 13 on iPhone or iPad. However, you'll first need to check if you already have multiple languages set up. Interestingly, you can change in a local language change (if you changed the localization in the application) immediately. Please tell me maybe you know how to do this. Each app can have its own separate language setting. Thanks to iOS 13, each app can now have its own language settings: if you want Spanish for WhatsApp but English for Instagram & Twitter, you can do that..

You can change the language setting on your iPhone, iPad, or iPod touch if it's incorrect or if you've accidentally changed the language to one you don't understand. Apple’s iOS 13 makes the iPhone and iPad multilingual. iOS 13 has come with several new features. Change the language of an individual app without disrupting the default system language of your iPhone in just a few simple steps. How to change your app language in iOS 13 Follow these simple steps to change the language of your app: (in this example we will be changing the app to Spanish whilst keeping the phone itself in English) While some new additions like Low Data Mode and Dark Mode have hogged a lot of limelight, features like “Remind When Messaging” and the ability to change the app-specific language on iPhone and iPad are still under the wraps.