I am also awaiting a definitive response as to this working or not. On 20190430, I sent the following through the "Contact" form on the website.
Will the Pro1 work on the US Verizon network? I looked on the forum and couldn't find a definitive answer. The closest I found was https://www.fxtec.com/forums/topic/cellular-bands/, which read like conjecture, not fact.
P.S. I'm still using a Motorola DROID 4 XT894.
On 20190513, I received a response indicating that testing on all major carriers would take place in June.
To give y