How to pre-populate the sms body text via an html link

Just put all of the symbols in this order (I only tested it in this order since it makes the most sense code-wise to me).

Notice for the body link... I just put... ;?&body=. Also, notice that I have found I needed to use %20 for any spaces.

I have tested it on my iphone (v. 9.2) and another android and it works just fine.

This will solve the issue with having to hack it for different devices. I have no artifacts when I tested it in the SMS.

<a href="sms:19131234567;?&body=Question%20from%20mywebsite.com.%20%20MY%20MESSAGE%20-%20" title="Click here to TEXT US gallery token needs updating!">Send me SMS</a>

It turns out this is 100% possible, though a little hacky.

If you want it to work on Android you need to use this format:

<a href="sms:/* phone number here */?body=/* body text here */">Link</a>

If you want it to work on iOS, you need this:

<a href="sms:/* phone number here */;body=/* body text here */">Link</a>

Live demo here: http://bradorego.com/test/sms.html (note the "Phone and ?body" and "Phone and ;body" should autofill both the to: field and the body text. View the source for more info)

UPDATE:

Apparently iOS8 had to go and change things on us, so thanks to some of the other commenters/responders, there's a new style for iOS:

<a href="sms:/* phone number here */&body=/* body text here */">Link</a>

(phone number is optional)

I know this is an old thread but stumbled upon it and found that some parts are no longer relevant.

I've found that if you want to just per-populate the text without adding a phone number, you can do the following:

sms:?&body=/* message body here */

For iOS 8, try this:

<a href="sms:/* phone number here */&body=/* body text here */">Link</a>

Switching the ";" with a "&" worked for me.