I came across this review today and the battery test shocked me: Now if you don't want to watch the video, both phones are set to refresh the browser every 10 seconds on the same website. After 3 hours the % remaining on each phone is as follows: iPhone 6s+: 19% (total battery size 2750) Mate 8: 57% (total battery size 4000) Now you might say well the Mate 8 has a much larger battery, which is true. However if you do the math the following should be true in theory: Mate 8 with 2750 mAh battery = 30% left after the same test Mate 8 with 2000 mAh Battery = 17% left after the same test Please also keep in mind that the Mate 8 is pushing a 6 vs 5.5 inch screen. Now the reason I started this topic is to create a discussion on what is the main reason the Mate 8 is this good. 1. is it because Huawei makes the Kirin chipset and is able to optimize it for their own phone? 2. because the screen is 1080p? 3. A combination of both? 4. Some other reason. I think it is 2. Makes me wonder how much better would phones like the Note 5, 6p, etc would do. If you agree with 2, does that mean when others say "the iPhone battery is that good because the software and hardware are optimized for each other" is false? The Mate 8 is 7.9mm thick and actually lighter than the iPhone 6s+ for those who want to know.