The big battery provides long life, introduces advanced new camera systems, the best performance.Dual back cameras conveys genuine 2x optical zoom.It looks very legitimate .The lack of antenna bands seems very likely. some positive points are larger, single-lens sensor, No more camera bump, a larger battery for fast charging, also it has a hexa-core processor, 3GB of RAM and iOS 10.3GB of RAM is big jump in a short amount of time, even for the 5.5-inch iPhone 7.