If you want to buy a new phone from T-mobile do you have to sign a new 2 year contract?
I have the sidekick slide and have had it for over a year now and would like to change it and by the my touch. But if I buy a new phone from T-mobile does that mean I have to sign another 2 year contract even though I still have a year left on the original? I don’t want to change my plan just my phone, can I do it without signing another contract?
Nope, you’ve to pay the full retail of the phone. You can also buy the MyTouch 3G without contract from eBay for cheaper. You can also mail me to manchurianp@yahoo.com

Nope, you’ve to pay the full retail of the phone. You can also buy the MyTouch 3G without contract from eBay for cheaper. You can also mail me to manchurianp@yahoo.com
References :
Since you’re not eligible for an upgrade (which would require you to sign a new contract) a new phone would be full price.
References :
former customer