I recently purchased the new iPhone 16 Pro Max directly from Apple and paid the full amount for it. I chose to have it carrier unlocked on as i have FirstNet. However, when I try to set up cellular service, the only option I see is to transfer from a nearby iPhone, and this process fails every time. I've contacted customer support and tried to set it up using the IMEI, but it fails on their end as well. I even went to the ATT store and attempted to use 10 different eSIM cards, but they all failed. It's frustrating because I've spent a significant amount of money on this phone, and now it seems unusable. Does anyone have any advice or suggestions on how to resolve this issue?