Glossary · Display
Always-on display
An always-on display shows the time, date, and notifications even when the device is locked.
What does Always-on display mean?
Instead of turning off completely, the display stays on in a power-saving mode. You see the most important information without waking the device.
This is made possible by OLED displays, where only the lit pixels use power, and by a very low refresh rate. The feature still costs a little battery. In the settings, you can turn it off or limit it to certain times.
A general explanation of the term, not from a video. How it plays out on a specific device in everyday use is covered in the reviews below.