USE A PHONE HEADSET
AVOID PUTTING YOUR EAR TO YOUR SHOULDER
Using a phone headset eliminates the possibility of torticollis, or muscles spasms in the neck, from improper phone usage. Repeatedly bending your head to your shoulder to hold a phone causes injury to the joints, muscles, and ligaments in the necK. It is also possible for injuries to these areas to cause referral pain and subsequent headaches. If use of a headset is not possible, alternate holding the phone with your right and left hand.