We found a proposed method and tested:
<a href="sms:12345678?body=Hello my friend">Send SMS</a>
Here are the results:
- iPhone4 - fault (empty body of message);
- Nokia N8 - ok (body of message - "Hello my friend", To
"12345678");
- HTC Mozart - fault (message "unsupported page" (after click on the
"Send sms" link));
- HTC Desire - fault (message "Invalid recipients(s):
<12345678?body=Hellomyfriend>"(after click on the "Send sms" link)).
I therefore conclude it doesn't really work - with this method at least.