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How does a smartphone know up from down

Smartphones have become an integral part of our life. We stare at them for hours a day without feeling tired. A very common feature of smartphones is auto switching between portrait and landscape.

We use it a lot more often than we realize without thinking much about how it actually works. Well, let’s find out what technologies engineers put in these small gadgets that enable them to make this sort of decision. Our favorite Engineer Guy explains it very well.