I purchased a t-mobile mytouch 4g outright last week (no contract). When I contacted t-mobile about getting the phone unlocked, they were happy to provide me with an unlock code. The only problem for me is that unlocking the phone requires using a SIM card from other phone provider, something which I dont have access to atm. Is there any way for me to unlock the phone without having to use a SIM card from another provider. Buying a SIM card isnt cheap (eg $25 for AT&T SIM card), and I would like to get the phone unlocked before I head overseas (in case the unlock code doesn't actually work, I won't be able to return the phone to t-mobile without having some difficulties.