Smartphone use has rapidly increased because of its availability and all its advantages making it indispensable in everyday life. Frequent smartphone use is correlated to high levels of addiction that result in text neck, both of which may impact health seriously. The epidemic of text neck syndrome, which affects individuals of all ages who use smartphones, has increased globally. The term "text neck" which was created by chiropractor Dr. Dean Fishman, and known as "turtleneck posture," is a repetitive stress injury to the neck brought on by having the head positioned forward and downward when gazing at a smartphone for several hours. Currently, it is challenging to function without a smartphone. As a result, smartphone use affects a wide range of social, physical, and psychological aspects. Notably, parents, community educators, counsellors, practitioners, policymakers, and all health care professionals should therefore be more aware of the long-term negative impacts of smartphone addiction and its sequelae of text neck syndrome, which has become an emerging public health concern. Therefore, this narrative literature review aimed to synthesize the essential concepts related to text neck syndrome and highlight the updated knowledge gaps to provide implications for further studies that help combat this growing epidemic of digital behavior.