No, it seems. Just tested it on my iPhone 6+ running iOS 10.0.1
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>test</title>
</head>
<body>
<a href="sms:0412345678&body=testing">send sms</a>
<button onclick="window.location.href = 'sms:0412345678&body=testing'">send sms</button>
</body>
</html>
, "" .
, . URI ( %20 , ). body encodeURIComponent.
, , , Apple :
sms Messages. URL- - "sms:", - , SMS-. 0 9 (+), (-) (.). URL .
body, , .
iOS < 7 <a href="sms:0412345678;body=text">send sms</a>
iOS > 7 <a href="sms:0412345678&body=text">send sms</a>
, <a href="sms:0412345678&body=test">send sms</a> :
- iPhone 6+ (iOS 10.0.1)
- iPhone 6 (iOS 10)
- iPhone 5 (iOS 9)
- iPhone 4S (iOS 8)