My husband's iphone 6 takes brighter, more focused, sharper photos than my 7 plus. We have done side by side tests and his beats mine every time. Unless the lighting is absolutely perfect and the subject completely still, my 7 plus photos tend to have a slightly grainy, almost water colorey quality to them, whereas his photos with 6 are crisp, bright, and sharp. The photo on the left is the 7 plus, right is the 6. Am I doing something wrong?