Oppo A57s is a complete Android smartphone , which doesn't have much to envy from more advanced devices. The 6.56-inch touchscreen display is surprising , placing this Oppo at the top of the category. Resolution of 1612x720 pixels. In terms of functionality, this Oppo A57s really lacks nothing. Starting with the 4G LTE module which allows excellent data transfer and internet browsing, passing through Wi-Fi connectivity and GPS .This Oppo A57s is a product with few competitors in terms of multimedia thanks to the 50 megapixel camera that allows you to take fantastic photos with a resolution of 8165x6124 pixels and record videos in full HD at a resolution of 1920x1080 pixels. The thickness of 8mm is really contained and makes this Oppo A57s even more spectacular.