Nearly two years ago, Peter Chou, CEO of HTC, confirmed that the company would no longer be locking bootloaders. Whether or not they've actually lived up to this claim is debatable. Any phone bought from a wireless carrier comes locked. Only the new HTC One Developer Edition ships with an unlocked bootloader, and it does not have any carrier add-on software installed.
However, HTC does provide an official way that anybody can use to unlock their phone's bootloader. While this method does not unlock every partition (the same is true for the HTC One Developer Edition), it unlocks the partitions... more