iPhone simulator works fine, but iPhone aways get kCLErrorGeocodeFoundNoResult; here is the code snipet: CLLocationCoordinate2D cordinate = value.MKCoordinateValue; CLLocation *location = [[CLLocation alloc] initWithLatitude:cordinate.latitude longitude:cordinate.longitude]; NSLocale *usLocale = [[NSLocale alloc] initWithLocaleIdentifier:@"ja"]; if (self.geocoder.isGeocoding) { NSLog(@"doing reverse address and return"); [self.geocoder cancelGeocode]; return; } [self.geocoder reverseGeocodeLocation:location preferredLocale:usLocale completionHandler:^(NSArray<CLPlacemark *> * _Nullable placemarks, NSError * _Nullable error) { if ( error == nil) { }else{ NSLog(@"%f %f reverse address with error:%@ placemarks:%@" , cordinate.latitude, cordinate.longitude,error, placemarks); if (error.code == kCLErrorGeocodeFoundNoResult) { NSLog(@"kCLErrorGeocodeFoundNoResult"); } } }];