Unlocking a HTC HD2 only takes a few steps. Once unlocked your HTC HD2 will work on any phone carrier’s network. An unlock code is required and fortunately is the only part of these free instructions that may cost you some money. Essentially these unlock instructions work by turning off your HTC HD2’s SIM lock. This SIM lock will prevent your HD2 from working with any phone carrier’s SIM card and only SIM card’s from your current phone carrier.
It is possible to get a free unlock code for your HTC HD2 though. In fact, you can try calling up your mobile phone carrier’s support line and requesting one. Otherwise you can purchase it here. Either way, you will need your HTC HD2’s IMEI number, which you can find for free by typing *#06# on the phone as if you were making a phone call.
Once you have an unlock code for your HTC HD2 mobile phone, you are ready to begin the unlocking using these instructions. Here they are:
Unlock a HTC HD2 phone
1. Power on your HTC phone with an unaccepted SIM card in (or no SIM card at all).
2. Enter your HTC unlock code you acquired earlier.
3. Your HTC phone should be unlocked and may automatically reboot
Also just in case you were wondering the HTC HD2 is also known by some carriers as the HTC HD2 T8585 or HTC Leo 100. Essentially they are all the same cell phone.