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Samsung Galaxy S4 (三星盖世S4) is a flagship smartphone released by Samsung Electronics in April 2013. It followed the success of Samsung Galaxy S III and continued to dominate the Android smartphone market.

Design

The Galaxy S4 has a 5-inch Super AMOLED display and a resolution of 1080 x 1920 pixels. It measures 136.6 x 69.8 x 7.9 mm and weighs 130g. The phone has a plastic body and the back cover is removable, which allows users to replace the battery or add a microSD card to expand the storage capacity. The phone is available in four colors: Black Mist, White Frost, Arctic Blue, and Red Aurora.

Hardware

The Galaxy S4 is powered by a 1.6 GHz Octa-core (Exynos 5 Octa 5410) processor or a 1.9 GHz Quad-core (Qualcomm Snapdragon 600) processor, depending on the region. It also has 2 GB of RAM and comes with 16 GB, 32 GB, or 64 GB of internal storage that can be expanded up to 64 GB with a microSD card. The phone has a 2600 mAh battery that provides up to 17 hours of talk time and up to 370 hours of standby time.

Camera

The Galaxy S4 has a 13-megapixel rear camera with LED flash and autofocus, and a 2-megapixel front-facing camera. The camera has features like Dual Shot, which allows users to take pictures with both the front and rear cameras at the same time, and Sound and Shot, which captures an image along with a few seconds of audio. The camera also has other features like Drama Shot, which takes multiple shots and combines them in one photo, and Eraser Shot, which removes unwanted elements from a photo.

Software

The Galaxy S4 runs on Android 4.2.2 Jelly Bean, but can be upgraded to Android 5.0 Lollipop. It also has the TouchWiz user interface, which includes features like Smart Pause, which pauses a video when the user looks away from the screen, and Air Gesture, which allows users to control the phone by waving their hand over the screen. The phone also has other features like S Voice, which is Samsung's virtual assistant, and S Health, which tracks the user's fitness and wellness.

Reception

The Galaxy S4 was a commercial success, and in the first month of its release, Samsung sold over 10 million units worldwide. It received positive reviews for its display, camera, and software features, but criticized for its plastic design, which some users felt was not in line with the phone's premium price. The phone was also accused of being too similar to its predecessor, the Galaxy S III.

Conclusion

Samsung Galaxy S4 was a popular smartphone that helped Samsung continue to dominate the Android market. Its features like the 13-megapixel camera, Octa-core processor, and TouchWiz user interface were well received by users. Despite criticism of its plastic design, the phone was a commercial success and cemented Samsung's place at the top of the smartphone market.