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.
This will display the battery life percentage indicator in iOS, alongside the battery icon in the status bar at the top of an iPhone, iPad, or iPod touch: 1  Open the Settings app on the iPhone, then go to âGeneralâ. 2  Choose âUsageâ and toggle the switch next to âBattery Percentageâ to ON. 3  Exit out of Settings as usual.