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.
I have an iPhone 4S. I really don't know in which basis it shows Answer/Decline buttons when someone calling me. Sometimes it shows both buttons and sometimes it only show the option Slide to answer. The scenarios are, The iPhone is locked/unlocked. The iPhone is in normal mode/silent mode.