4 Smaller Battery
Of all the important features that received an upgrade in the new iPhone 8 lineup, battery life was not among them. In fact, the batteries installed in both the iPhone 8 and 8 Plus are actually smaller than the batteries in the iPhone 7 and 7 Plus. Presumably, Apple shrunk the batteries in order to make room for other internal components, like the new wireless charging coils.
Sure, battery life is estimated to be “roughly” the same — Apple no doubt tweaked the software and hardware to offset the smaller battery capacity. But still, battery capacity is among the features that rarely sees a significant upgrade in modern flagships. And consumers shouldn’t have to shell out more money for a premium device without an upgrade to battery life.