The average time a US citizen spends looking at their phone each day is over five hours. That's almost half of our waking hours spent staring at a phone screen. But with our eyes constantly glued to a screen, there might be some concern about how much blue light exposure our eyes get. The same light is the culprit for causing damage to our eyesight and tricks our brains into staying awake (at night). However, most modern-day Android tablets and Android phones have methods to limit your exposure.