Account kit: Set the default language for iOS app

How to change the language in Facebook-Account-Kit for iOS?

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How iOS determines the language for your app?

A: To determine the language for your app, iOS considers not only the order of the user language preferences (in General > Language & Region of the Settings application) but also the localizations your app declares it supports.

How many languages does iOS support?

There Are Two Main Languages That Power iOS: Objective-C and Swift. You can use other languages to code iOS apps, but they may require significant workarounds that require more effort than needed.

Facebook said that: Localization support is also provided by the SDK. The supported languages are packaged with the SDK. You don't need anything else to display text in the appropriate locale. But it's not enough, you must add your language in Project Info like image below enter image description here