The Essential Eye Health Tip All Smartphone Users Must Follow How Many hours do you spend looking at your smartphone each day? Most people underestimate their daily screen time. In today’s busy digital lifestyle, smartphones control almost everything—from waking us up in the morning to keeping us entertained at https://www.tumblr.com/medjournalhealthcare/800480014393032704/the-one-thing-every-smartphone-user-should-know?source=share