Compared with S3 series mobile phones, Samsung S4 series mobile phones (I9500/I9502/I9508/I959) are mainly upgraded in screen, processor, camera and battery capacity. The mobile phone screen has been upgraded from 4.8 inches in S3 to 5.0 inches in S4. 1080P. S4 processor adopts dual quad-core processor (I9508 adopts quad-core 1.9GHz processor), the main camera is upgraded from 8 million pixels in S3 to13 million pixels, and the battery is upgraded from 2 100mAh in S3. The design has also been improved. S4 fuselage is thinner, 7.9mm thick, and the overall design is tougher. In terms of functions, S4 supports smart screen and gesture sensing functions, and can realize functions such as floating window to answer phone calls, scrolling web pages with eyes, hanging windows to view photo albums, etc.
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