Chronic neck pain may be caused by various issues including muscle strains, joint issues, nerve compression, injuries and other diseases. In some cases, proper posture, avoiding shoulder straps, sleeping in a good position, and proper phone positioning may prevent and improve your condition.
Acupuncture is widely used for chronic and acute neck pain. A German study including 14,161 individuals found that chronic neck pain patients receiving acupuncture reported less severe symptoms, less pain, and more improvement to daily function compared to those who did not receive acupuncture. Benefits of treatments were maintained past treatment period.
References:
Witt CM, Jena S, Brinkhaus B, Liecker B, Wegscheider K, Willich SN. Acupuncture for patients with chronic neck pain. Pain. 2006;125(1-2):98-106. doi:10.1016/j.pain.2006.05.013