TMobile Unlock policy. I am looking to buy new pixel 9 pro XL. Can I pay full amount $1000 at the time of order and Would I still receive trade-in credits? Would I be able to unlock phone?

I am looking to buy new pixel 9 pro XL.

Can I pay full amount $1000 at the time of order and Would I still receive trade-in credits? Would I be able to unlock phone?

Plan - Go5G Plus