Hi and thank you for taking an interest in my question.
So I believe I am following the steps outlined in this post
What I want to do is get a discounted Nexus One for $179, cancel the new T-Mobile service, keep the Nexus One, eat Google's ETF if they charge it, and pop my SIM from my old T-Mobile smartphone into the Nexus One.
I have registered a SIM on T-Mobile on a new EM+ 500 plan. I have a number for this new plan and a PIN.
I then go to Google's Nexus One
page and select the following options.
click on "Get your phone" button
Now on new page
"which one would you like to buy?"
select Phone+Plan T-Mobile / $179
click on continue
Now on the "tell us about yourself"
select "no, I want to modify my existing individual plan with T-Mobile"
fill in phone number and pin
select "I want to add a new line of service and new phone number to my existing T-Mobile account."
check the two terms and conditions boxes
Now 100% of time I see a quick "we're checking your eligibility now" page followed by
We are currently unable to process your request for service with T-Mobile.
T-Mobile's servers are busy or unreachable.
You can try again later, or you can purchase the unlocked phone without service.
And two buttons, "buy the phone without service" and "try again later."
My SSN is associated with two other plans. One's a smartphone plan and the other is a family plan with multiple lines. These are billed separately from each other and from the SIM plan I'm trying to use with the Nexus One registration.