We are currently developing an iPhone App which requires localization support and I ran into an issue while trying to get currently set language.

Cocoa Touch has a class called NSLocale which let’s you query the language by writing the following code:

At least one would expect so, but it actually gives you the language of the region format you have configured in your settings.

For example:
If you have your iPhone language set to ‘English’, but your region format is set to ‘Germany’, the call will return ‘de’ instead of ‘en’.

What you really should call is:

Because this gives you not the language associated with the region, but the language the device is actually configured for.