-(void)webView:(WKWebView* )webView didStartProvisionalNavigation:(WKNavigation* )navigation

{

    NSString *path= [webView.URL absoluteString];

    NSString * newPath = [path lowercaseString];

    if ([newPath hasPrefix:@"sms:"] || [newPath hasPrefix:@"tel:"]) {

        UIApplication * app = [UIApplication sharedApplication];

        if ([app canOpenURL:[NSURL URLWithString:newPath]]) {

            [app openURL:[NSURL URLWithString:newPath]];

        }

        return;

}}