Legacy. Hermann Ebbinghausâ lasting contributions to the field of psychology are multiple. In addition to being the first psychologist to study areas of human learning and memory, Ebbinghaus contributed greatly to the establishment of experimental psychology.
This includes dimming the display slightly, stopping Mail push and fetch, turning off background app refresh, turning off Hey Siri, and a few other iOS features. By turning these features off, the battery life of the iPhone is extended dramatically, and when Low Power Mode is enabled the iPhone battery icon is yellow to demonstrate this.
When Low Power Mode is on, the battery in the status bar will be yellow. You'll see and the battery percentage. After you charge your iPhone to 80% or higher, Low Power Mode automatically turns off. Low Power Mode is available only on iPhone. Learn more about the battery life of your iPhone.