They don't state explicitly, so it's basically source-available software, not Open Source (nor Free Software). https://www.theregister.com/2011/04/06/nokia_con

They don't state explicitly, so it's basically source-available software, not Open Source (nor Free Software). https://www.theregister.com/2011/04/06/nokia_confirms_symbian_not_open/ https://www.theregister.com/2011/04/06/nokia_confirms_symbia...