I had to tell the rep I talked with to keep looking but eventually she found the LTE enabled 6 GB for $30/month data add on. The key was "add on". It's not an LTE plan as those have a voice component. Once she looked immune add ons she found it. I did have to agree to another 3 year commitment for the add on but since I had only been on the non-LTE version for 1 year it was really only a 1 year extension to what I had already committed to.