public boolean shouldOverrideUrlLoading(WebView myWebView, String url) {
        if (url != null && url.startsWith("sms:?")) {
            myWebView.getContext().startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse(url)));
            return true;
        } else {
            return false;
        }
    }

if (url != null && url.startsWith("sms")) {