Hey friends, I am sharing my personal opinion for I phone 7 plus as I am bought it 1 week ago.
The new Plus model might come in a similarly designed chassis to the last generation, with the same 5.5-inch screen, but it looks a little different thanks to the more subdued antenna lines, especially when presented in its glossy black("Jet Black") or matte black("Black") finishes - which join the gold, rose gold and silver colour options.
On the lighter colour models the new antenna design is more apparent, but it no longer cuts through the metal back plate design like it once did. It now wraps around the top edge of the phone rather than intersecting top and bottom. In our matte black model, it’s hardly noticeable.
We’ve seen dual cameras before in devices, from the LG G5’s wide and super-wide lenses, to the Huawei P9’s colour and monochrome sensors. But Apple does take a different approach to how other manufacturers are tackling it, by offering one wide-angle lens(23mm f/1.8 equivalent), and one standard lens(56mm f/2.8 equivalent; Apple likes to call it "telephoto", but that focal length equivalent is about as close to a standard lens as you can get).
In the iPhone 7 Plus’s Camera app the second camera is represented with a single "2x" icon that you can tap at any time to instantly switch from wide-angle to standard lens. A longer press means you can zoom beyond the optical zoom available and achieve up to 10x digital zoom(or 5x digital zoom from the longer focal length lens.
Beyond basic zoom controls, which can be used in any of the camera’s shooting modes(including video), Apple has also tried to be clever by utilising the results of both lenses together to create what it calls "Depth Effect". This is for use in Portrait mode only(that’s from the 56mm standard lens only, not the wide-angle 23mm one).