HTC One X which is one of the quality smartphone in today’s world has a unique feature related to its camera. HTC One X camera shutter can be controlled using the bluetooth headset.
Below is the video from a Chinese website ePrice shows the demo of controlling the camera shutter of the HTC One X by various Bluetooth headsets remotely. The button combinations differ between headsets, so if you want to try this then make sure to try double or triple-clicks on each of the buttons.