EverythingApplePro talked about Apple’s plans to add Always-On-Display to new iPhones. A new LTPO display will help the company with a refresh rate of 120 Hz, which can be reduced to minimum values to save battery power.
This feature is present not only in many modern Android smartphones but even in older Nokia phones. The smartphone is locked mode shows the time, notifications and other useful information using a small display area. This is especially effective on OLED displays that can use individual pixels.
Apple has already implemented Always-on-Display in the new Watch Series 6 – they reduce the display brightness and refresh rate to once per second so that the image changes only when the arrow changes its position. This allows you to constantly display time and not waste a lot of energy on it. Similarly, the function can be implemented in the iPhone: it will constantly show the time and battery level, and notifications will appear on the screen. During this time, the display brightness will be reduced.