An unlocked T-Mobile HD2 will work with any GSM phone carrier. The T-Mobile HD2 can be unlocked using a T-Mobile unlock code. There are a few ways to get yourself an unlock code for the HD2. First, you can call up T-Mobile and request a free unlock code. Secondly, you can look online for a cheap vendor that sells them. You may have to choose the second option in this case, since the T-Mobile HD2 is not actually out yet, but has a release date set for later this month (March 2010).
You may be asking, why don’t I just buy an unlocked version of the HD2? Well first off, since this phone is being released and prodocuded by T-Mobile, they have jacked the price of the unlocked version way up to almost $650! Additionally, it is often cheaper to just pay for a cheap unlock code and unlock the cell phone yourself. Below I have provided some unlocking instructions that should work for the T-Mobile HD2, as they work for very similar GSM or SIM based phones. Good luck!
How To Unlock T-Mobile HD2
1. Switch ON HD2 with a not Allowed SIM Card.
2. If phone ask, enter the PIN code of your SIM Card
3. Now phone will ask you to enter the unlocking code
4. Enter Unlock Code we send to you.
5. Your HD2 phone is now unlocked!