Many users of modern smartphones notice that even in sleep mode, the screen of their device continues to display the time, date or notifications. This technology is called Always On Display (AOD). Confusion often arises: users look for a separate app to download, not realizing that in most cases it is a built-in feature of the operating system. However, if your device does not support it out of the box, there are specialized applications that can emulate this mode.
In this article we will look in detail at what this screen operating mode is, why it does not burn the matrix, despite constant activity, and what exist third-party solutions for older or budget models. You will learn how to configure the function through the system menu Settings → Screen and whether it is worth installing additional utilities from Google Play at all.
The essence of Always On Display technology
The technology Always On Display is based on the physical features of OLED and AMOLED matrices. Unlike IPS screens, where the backlight is constantly on throughout the entire image, in organic LEDs each pixel glows independently. This allows you to display information on a black background, activating only a tiny part of the display.
That is why power consumption when AOD is on is minimal. The system uses display drivers to maintain a static image without completely loading the processor. If you see the time on the screen when the screen is off, it means that the vast majority of the pixels are physically turned off and are not drawing current.
⚠️ Warning: Using the Always On Display mode on IPS screens is not possible without serious harm to the battery, as it requires the entire backlight to be turned on. Make sure that your smartphone has an AMOLED matrix before activating the function.
Manufacturers implement this function in different ways. In flagship models Samsung, Xiaomi or Google Pixel this is part of the firmware. In more affordable devices, the function may be hidden or absent, which encourages users to look for alternatives in the form of third-party software.
Built-in Android tools vs. third-party applications
When a user enters the query “always on display what this app is,” he often expects to see a specific name of the APK file. In fact, in 90% of cases it is a system service. You can find it in the Wallpaper and style or Lock screensection. Activation occurs through a simple switch that does not require superuser rights.
Third-party applications, such as Always On AMOLED or Screen Off and Lockare only necessary in two cases: if the manufacturer disabled the function programmatically or if you want to expand the functionality (for example, display custom GIF animations). However, such apps work less optimized than system solutions.
- 🔋 System AOD consumes about 0.5–1% of charge per hour.
- 📱 Third-party applications can increase consumption by up to 2–3% due to less efficient pixel management.
- ⚙️ The built-in function supports gestures to enable full backlighting, whereas applications often lack this.
It is important to understand the difference in access to hardware resources. System software takes precedence and can change the brightness of pixels at the hardware level, while applications work through standard APIs, which sometimes leads to flickering or incomplete turning off of the backlight.
If you install a third-party application, be sure to give it permission to run in the background and disable battery optimization for this process in the settings systems.
How to enable Always On Display in the smartphone settings
Activating the function does not require complex manipulations. The interface may differ depending on the manufacturer's shell, but the logic remains the same. First you need to go to the main menu of the device settings.
Next you should find the section responsible for visual design. This could be a tab Screen, Wallpaper and style or Lock screen. Inside you will find the item Always On Display or Screen information.
After turning on the switch, the system will prompt you to select a mode work. You can leave the screen active all the time, set a schedule (for example, from 8:00 to 23:00) or activate the display only when touched. The last option is the most energy efficient.
| Manufacturer | Menu path | Setting features |
|---|---|---|
| Samsung | Settings → Lock screen | Selecting a clock style, notifications, schedule |
| Xiaomi / POCO | Settings → Screen always on | Mode "10 seconds after touch" or "Scheduled" |
| Google Pixel | Settings → Screen → Lock screen | Integration with Google Assistant and style |
| OnePlus | Settings → Personalization → Always On Display | Ability to upload your own images |
Some models allow you to configure automatic shutdown functions when the smartphone is in your pocket or bag, using data from the proximity sensor. This prevents accidental battery drain.
☑️ Check before turning on AOD
Popular applications for AOD emulation
If your smartphone does not have built-in support, applications from the Google Play store come to the rescue. The app Always On AMOLEDremains the leader in this niche for a long time. It uses a black background and white pixels to simulate the operation of an OLED display even on other types of screens, although on IPS it is extremely ineffective.
Another popular solution is Screen Off and Lock. This application not only shows the time, but also allows you to lock the screen, saving resources. It requires device administrator rights for the display to turn off function to work correctly.
⚠️ Warning: AOD emulation applications may conflict with system unlock gestures. If your phone stops responding to swipes, try uninstalling a third-party utility.
There are also highly specialized utilities that allow you to display information about the weather, exchange rates or pedometer on a black screen. An example is AOSS - Always On Screen & Lock Screen. Such apps often have built-in watch face designers.
Why may applications not work on some phones?
Some manufacturers (for example, Huawei or Honor in older models) block the ability to display images on a switched off screen at the driver level. In this case, no application will help, since the physical display controller is de-energized when locked.
The impact of Always On Display on battery and screen life
The main fear of users is rapid battery wear and matrix burnout. Modern pixel shift algorithmused in Android solves the problem of burnout. The image of the time and icons is periodically shifted by several pixels so that the load is distributed evenly over the entire screen area.
As for the battery, consumption is indeed present, but it is not critical for modern batteries with a capacity of 4000 mAh or more. When using the "scheduled" or "touch" mode, you will lose no more than 5-10% of the charge for a full day of active use of the smartphone.
However, if you leave the function turned on for 24 hours in the "Always" mode, and also add the display of bright color notifications, the consumption may increase. In such conditions, the smartphone may discharge in the evening by 15–20% faster than usual.
- 🕒 The "Always" mode reduces battery life by about 1 hour of screen time.
- 🌙 Night mode (turns off from 23:00 to 07:00) makes energy consumption invisible.
- 🎨 Colored wallpapers on AOD consume significantly more power than monochrome ones.
To extend battery life, it is recommended to use dark themes and minimalistic watch faces. The smaller the area of the luminous pixels, the less current the display consumes.
The optimal strategy for using AOD is to set a work schedule only during waking hours. This preserves the benefits of the function without significantly compromising battery life.
Troubleshooting and common configuration errors
Sometimes users encounter a situation where the function is enabled, but the screen remains black. Most often this is related to work energy saving mode. When battery saving is activated, the system forcibly disables all non-essential functions, including Always On Display.
Another common problem is the function spontaneously turning off after a reboot. This may indicate a system application failure SystemUI. In this case, it is recommended to clear the cache of this process through the menu Settings → Applications → Show system → SystemUI → Memory → Clear cache.
If you are using a third-party application, check your screen lock settings. Some types of protection (for example, a complex pattern with additional parameters) may prohibit the display of information on the locked screen for security purposes.
⚠️ Attention: Settings interfaces may change with Android updates. If you do not find the item you need, use the search inside the settings menu by entering the query "Always On" or "Screen".
FAQ: Frequently asked questions
Is it possible to enable Always On Display on an iPhone?
Yes, starting with the iPhone 14 Pro model and newer versions, the function Always-On Display available in iOS settings. On older iPhone models, this function is missing in hardware or software.
Why does AOD not work on my AMOLED screen?
Perhaps the manufacturer specifically disabled this function in your model to reduce the cost of the device, or the function is hidden in the engineering menu. Also check if the maximum power saving mode is enabled.
Does Always On Display burn out the screen over time?
If implemented correctly (with pixel shift), the risk is minimal. However, a static image of a bright icon at one point for years can theoretically leave a mark. It is recommended to change watch styles every few months.
Is it safe to use third-party apps for AOD?
Most popular apps are safe, but they require broad permissions. Download software only from the official Google Play store and check user reviews before installing.