does tmobile blacklist?

Just wondering if tmobile blacklists imei numbers.I know Verison and Sprint blacklist esn #`s.I ask cause I want to buy a used curve or wing,and you never now if you might be getting a stolen phone.So if they do,would I be able to check to see if a phone was blacklisted?

With gsm phones (AT&T, TMo) you can just place your sim card (must be on same carrier if not unlocked) into a phone and use it. No need to check.

Gadgetgirl is right. If the phone has already been registered as stolen and the handset serial number (IMEI) blacklisted (barred) you wont be able to make a call even if your SIM is valid and your account in credit.