In short, when you see SOS on your phone, it means you're not connected to a cellular network. "If you see SOS or 'SOS only' ...
Verywell Health on MSN
What Happens to Your Eyes When You Use a Blue Light Filter
Exposure to blue light doesn't have adverse effects on your eye health. It can, however, disrupt your circadian rhythm. Using blue light filters may help reduce the effects of blue light exposure ...
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