I just asked this question over at BuzzAboutWireless, the "official" Website for Sprint customers.
This is the link to the post:
http://community.sprint.com/baw/message/120760#120760
Here was my first answer from their sprint rep:
Hi there!! I have fully reviewed this information for you. It looks as though the Touch Pro 2 can be activated onto the Sero plan. Hope this helps!
All happy and smiles yes? So, I ask for documented proof that this in fact is actually the case, since this answer was posted today. Approximately 20 minutes later, this was the follow-up response:
I truly apologize for the confusion and misunderstanding. After further reviewing this for you, it looks as though the Touch Pro 2 would need to be placed on one of the Everything Data plans. You may find this information online at Sprint.Com. When viewing the device online at Sprint.Com, please click the More Info link. Once you have done this, it will bring up a seperate window displaying more information about the device. You will see Mail-in Rebate Requirement: For this phone to work and to get your mail-in rebate, you'll need a plan with data or qualified data add-on. See plan details. Clicking the link regarding plan details will display the compatible plans. Again I do apologize for the confusion. If you have any more questions feel free to private message.
Nothing like getting it straight from the horse's mouth, unless that is the horse can't make up its mind. I do not wonder why sprint is losing so many customers. Now, remember, I ASKED very specifically if I could put it on my EXISTING SERO account. The answer first says yes, and then says no. And goes further to NOT EVEN MENTION SERO as an option.
Yes, truly, even they don't know.