Waterproofing – Even though the competition has been offering this for long, Apple finally incorporated this in the latest iPhone. Good decision Apple !
The Camera – iPhone 6S had one of the better (if not the best) cameras of 2015 and now, iPhone 7 improves it even further. Though it still misses out on a larger sensor and a dedicated ‘pro’ mode, the addition of OIS and a larger aperture (f/1.8). This should enable iPhone 7 to take much better low light photos compared to the iPhone 6S. Also, the dual camera on the 7 Plus might look gimmicky at first (LG, HTC and Huawei has already done this), Apple’s implementation is better, as it enables 2X optical zoom using 2 different lenses.
The new A10 processor – It is going to be amazingly fast, no doubt about that. Just like the iPhones before this, iPhone 7 has one of the most powerful processors out there, a lower resolution screen also helps with the performance.
Stereo Speakers – To be honest, this came as a surprise that nobody expected Apple to include this. A welcome change nonetheless but not useful for everyone.