I want to change my ios simulator language to swedish, but i can't find this in settings. What can i do now to get swedish language.
If you are trying to test an application's localisations then there are easier ways than by changing the language on the device.
You can run the apps with a flag to indicate the country:
i.e for Swedish you can use the flag -AppleLanguages (sv)
Of course, on the simulator or the device, you can't run an app with a flag normally, except for when you are building and running it through Xcode, where you can set the launch arguments for each scheme.
I wrote about this in greater detail, with screenshots, and an example project: https://abizern.org/2012/03/18/simple-localisation-testing.html
This works for the simulator and the device, and you don't have to change any of the device settings.