Automatic Unlock and Other Features Your One will automatically unlock as soon as you flip open the front side, for a smoother and better user experience. The volume button will be reached as easily through the flip cover as without. The same goes for the lock button. As the backside has an opening for the camera and the flash, and the front side will leave the loudspeakers unblocked, you can take beautiful images and talk to your friends while not worrying about your One.