Ya its a real bummer!
If your talking about the one on the market. I was considering that but it says needs (root) superuser???
I called Tmobile 4 times already. First they said they dont give the SIM unlock yet because of the 14 day return policy, so I would have to call back after then. Calls two and three was "you dont have an account with us? Oh sorry we cant give you the unlock code then... Final call our asked for supervisor and they transfer me to Tech. department. Tech guy was cool and gave me a number to fax my receipt showing I paid full retail for two phones plus some add'l info for them to be able to get back to me. He allow them 24-48 to get back to me!!! But it could take as long as 7-14 days. I'm sure each and everyone of them was looking at the SIM code unlock screen as we was talking. BOO TMO!!!
TMOUS Samsung Galaxy S4
Dandroid KitKat GPE|Jan. 9, 2014| ★ Gravity Box Pro 2.9.1★
Recovery: TWRP 22.214.171.124