A note was obtained by MacRumors from KGI Securities analyst Ming-Chi Kuo where he mentioned the iPhone 8 will use a more expensive stacked logic board design to allow Apple to use a 2,700mAh battery (comparable to the 5.5″ Plus models) in a 4.7″ form factor.
The stacked logic board design creates more space inside the iPhone, allowing Apple to fit a higher capacity battery in the same space as the previous iPhones.
OLED displays are more energy efficient than LCD displays as they do not require a backlight, this will lead to huge gains in battery life but at a [...]