My iphone is configured in Korean. Thus when I try to use Apple Map, Siri speaks in Korean which sound very weird. When I use google map, voice navigation does not support Korean language yet so it just beeps whenever it tries to tell direction. I would like to if there is a way to change map app's language setting via ifile. Instead of using the global language setting, it would be nice if I can get google map uses english language for the voice navi.