Boom Key
Surprise on your Phone
The physical “Boom Key” on the side of the device can be used to activate certain functions in the software, such as waking the phone directly to the camera (holding down takes burst shots), music audio enhancement, cool parallax effects on home screen, and activating nitro in the driving game series. The retail packaging of the Idol 4S doubles as a virtual reality headset which the phone can be inserted into.