Dual cameras and full screen or bezel-less is the hot trends and topic in smartphone field. Hot popular Rio S and Ulefone S8 all packing dual cameras and feature bezel-less design. But AllCall Rio S have strong triple glass protector, which not has any damage from Land Rover rolling, so the Rio S much strong and anti-drop performance than Ulefone S8. On the other side,two device all have rear dual cameras, but Rio carry 8.0 mp and Ulefone S8 often 13.0 MP.
All the two phones all features MTK6737 Quad Core 1.3GHz 2GB RAM 16GB storage, and support 4G network, and 1280 x 720 Pixel screen but the display size come some difference, Rio S with 5.5 inch while Ulephone with 5.3 inch display. Rio S may have more widen and comfortable vision experience in video, game and ebook.
In the other hand AllCall Rio S be available in multiple colors: Black/ Golden/Red/ Lake Baikal blue; As you may know the Ulefone S8 only comes in Black and gold . If you have much requirements in color, maybe the Rio S give you more choice.
As for the price that we all care about, the price of Ulefone S8 is 79.99$, and Rio S also is 79.99$ in the presale. The presale will start in early September.