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.)
Published:Caption:David CarnoyPhoto:Screenshot by David Carnoy/CNET
Faster LTE (4G data), Faster WiFi
The iPhone 6S is equipped with LTE Advanced, which offers higher data rates than standard LTE, and supports up to 23 LTE bands (Apple says the most in
any smartphone) for better worldwide roaming. Apple also says that the iPhone 6s is up to
twice as fast when you’re connected to WiFi.