QB and SMS

Check out the ABC QRCode Example app on the exchange. It uses Google API to send SMS.

Here is the code in the formula rich text field that accomplishes the SMS:
"<img src=\"http://chart.apis.google.com/chart?chs=200x200&amp;cht=qr&amp;chl=SMSTO%3A"; & [Mobile] & "%3A" & [SMS Message] & "\" alt=\"Send text message to the contact\" title=\"Send text message to the contact\"/>"

// This code was originally generated at https://www.the-qrcode-generator.com/
// The above link contains URL encoded characters.
// Legend:
// %3B ;
// %3D =
// %3A :
// %0A space