Can the iPhone determine if you're facing north, south, east or west?

[[self delegate] currentDirectionLat:newLocation.coordinate.latitude Long:newLocation.coordinate.longitude];

-(void)currentDirectionLat:(float)latitude Long:(float)longitude
{
    prevLongitude = currentLongitude;
    prevLatitude  = currentLatitude;

    currentLongitude = longitude;
    currentLatitude = latitude;

    NSString *latDirection = @"";
    if (currentLatitude > prevLatitude)
    	latDirection = @"N";
    else if (currentLatitude < prevLatitude)
    	latDirection = @"S";

    NSString *longDirection = @"";
    if (currentLongitude > prevLongitude)
    	longDirection = @"E";
    else if (currentLongitude < prevLongitude)
    	longDirection = @"W";

    if ([longDirection length] > 0)
     	[lblDirection setText:[NSString stringWithFormat:@"%@%@",latDirection,longDirection]];
}