Open the Settings app and tap "Display." 2. First ... Now tap "Battery" and then opt for a power saving mode if you don't want to bother with customizing your app restrictions.

Low Power Mode is an iOS setting that disables some iPhone features to save battery charge when it ... turns off the always-on display newer iPhone models, disables video autoplay, and reduces ...

To make the display thin, light ... the newly developed power-saving blue OLED device can emit brightly even with a single dry cell battery (1.5 volts) (Fig. 4). In the future, the aim is to ...