Staring at your phone for too long could speed up the aging process.
A new academic study has suggested that blue light from the devices may give users wrinkles.
Experts at Oregon State University discovered that when fruit flies are put under the glaring light for 14 days they showed signs of impaired cell function and aging.
Dr. Jadwiga Giebultowicz, the biologist who led the research, warned that blue light exposure could be having a "detrimental effect on a wide range of cells in our body".
She said: "Our study suggests that avoidance of excessive blue light exposure may be a good anti-aging strategy."
Previous research has revealed that too much screen time raises the risk of obesity and mental health problems while there are also concerns that blue light strains the eyes and makes it harder for people to sleep.
Several devices have in-built mechanisms that allow users to reduce the blue light they emit.