On: The Curious Case of iPhone 6+ 1080p Display

[lewispb]

Actually no. The more pixels the screen has the more energy it requires to drive those pixels and so worse battery life. So by having a lower resolution screen and scaling down to fit that screen battery life is improved.

[ardacinar → lewispb]

The alternative talked about here is not having the physical screen resolution of 2208x1242 but rather just rendering at 1080p without scaling down.