One of the things that make smartphone devices so popular is their built in camera. Today’s mobile users may not realize this, but back when handsets first hit the market, phone makers did not put much emphasis in image capturing capabilities. But now that smartphone technology has improved so much, the latest models not only can take pictures, but also record 4K video, show slow motion footage, and achieve those cool bokeh effects (blurred backgrounds behind crystal clear subjects on the foreground).
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https://www.wirefly.com/blog/news/quest-make-dual-camera-handsets-see-things-people-do