s4 camera issue

[Android Question]

So i got a Samsung Galaxy S4... and I believe it's an imitation and is obviously not genuine. I'm actually fine with that but I'm bummed that the camera focus is really pathetic and it's blurry and dark and the image focus is not sharp. Is there an app that I can use/download that sharpens the image so it will look like it was taken by an actual Genuine s4?? If there is an app, I would really appreciate if you could give me the name. Thanks

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