The reply in this post by Morgan in Verizon Wireless Area Operations seems to indicate that it is not.
Does a release date exist before which a smartphone does not require a data plan ?
I believe the Treo 700W was released Sept 26, 2005
The Palm Treo 700W was released by Verizon Wireless January 5, 2006; therefore, the device does not require a data package when activated.
Note: Activations and upgrades to Smartphones that launched prior to 11/14/2008 do not require a data plan/feature of $29.99 or higher.
Hello, I just got a Palm Treo 700w and I tried to activate it without getting the data plan and it did not work. It said I needed to have the data plan. So how do I fix that? Because I looked it up online before I got it to see if it needed it and it took me to this page.
Online, it may force you to put a data pack on it. If so, go ahead and activate it with a data package, and after you're done with the activation, call *611 or 800-922-0204 and request either a data block, or a pay-as-you-go data package ($0.015/kb). This request must be done manually by a customer service representative. If you would like me to do this, please send a PM to me, and I'll give you a ring when I'm in the office to do this.
Just for clarification, the Palm Treo 700W or WX does not require a data package, but it may force one online. A quick call to customer service should resolve the issue.
Thanks for posting!