Every tech device comes with it’s benefits and also harmful effects. Few to list; bright light causes dry eyes, Disturbs sleep, posture while using mobile can cause neck sprain, and in long term can cause cervical problems (Neck problems) Most devices make you dependent or addicted.
Next Steps
Use technology, don’t let it use. U be the master.
Health Tips
Take a break at set times - Stop using mobiles when you are with family and friends, When you are eating. at-least 1 hour before sleep.