I have a T-Mobile phone and I was wondering if I could trade it in for free at the T-Mobile place
If its not your personal phone you are using now, you would probably get more money for it if you sell it yourself.
Depends on the phone you want versus the phones they offer for free at trade in. If you are upgrading after 2 years on your contract, then certain but usually low-end phones can be upgraded to for free. That stuff you hear about upgrading to, like a galaxy 4 at no extra cost because T-Mobile has the best upgrade plan, is basically them saying you can have this phone for so and so a month. In the end you are leasing a phone like that. Not getting it free.