The camera compares to Samsung's Note 7 and Galaxy S7 Edge, which sport a dual 12-megapixel rear camera and a 5-megapixel front camera, with 4K video (resolution that's four times higher than HD video), flash and autofocus. The Huawei P9 also has dual lenses, 12-megapixel cameras with two sensors, and an 8-megapixel front-facing camera. The Sony Xperia...