One Spec Apple Didn't Improve In IPhone 6S: Battery Life
In advance of Apple's iPhone 6S and 6S Plus September 9 launch event, CNET was one of several sites around Web that served up polls asking readers what improvement they most wanted to see in the next iPhone. While these polls weren't exactly scientific, the prevailing winner -- in some cases by a wide margin -- was improved battery life.
Alas, that didn't happen. A quick check of the specs reveals that the rated battery life of the iPhone 6S is identical to its predecessor. (The iPhone 6S Plus also has the same battery life as 2014's 6 Plus).
However, what's more disappointing is that Apple own video flyby of the guts of the iPhone 6S confirms that Apple has equipped the iPhone 6S with a 1,715mAh battery -- a lower capacity than the 1,810mAh version found on last year's iPhone 6. (The "mAh" acronym stands for milliampere-hour, which is a measurement of a battery's power capacity; the higher the number, the better.) And the the 6S Plus? The same MacRumors story that spotted the 6S battery capacity speculates that battery capacity on the bigger phone will dip down to 2,750mAh from 2,910mAh -- but that isn't confirmed yet.
Apple isn't saying why it's equipped the phone with a lower capacity battery, but the most likely answer is space. In order to keep the new models as thin as their predecessors while adding the new pressure-sensing 3D Touch feature (and the accompanying "Taptic Engine"), Apple had to go with a slightly smaller battery. That's the keystone feature of the new models which allows you to choose different options and shortcuts depending how hard or lightly you press the screen.