The modern smartphone serves as the main channel of communication, passing through hundreds of messages, calls and reminders daily. For users of the Xiaomi ecosystem, it is critical to instantly see incoming data without unlocking the device every time. However, after updating the operating system or resetting, many owners face a situation where the screen goes out and important alerts remain hidden in the curtain.
The problem with not having Lock Screen Notifications on MIUI and HyperOS shells is often not hardware failure, but aggressive power optimization. The system seeks to maximize battery life by turning off background processes and blocking the display of content on a switched-off display. In this article, we will detail where to look for hidden switches and how to make the interface work exactly as you like.
It only takes a few minutes to restore functionality if you know the exact sequence of actions on the menu. We'll look at both the standard system settings and the individual settings for each application, as global installations can be blocked by local prohibitions. Get ready to go from basic checks to fine-tuning system services.
Basic display activation on the locked display
The first step is to test the fundamental interface settings that are responsible for displaying information on the black screen. In current versions of firmware, the path to these parameters may differ slightly, but the logic remains the same for all models, from the budget Redmi Note to the flagship Xiaomi 14.
Go to Always On and Lock screen (or just Lock Screen in older versions of MIUI) and this is the key switch that is often turned off by default after major security updates. Make sure the Lock Screen slider is activated or no further manipulation will result.
⚠️ Note: On some global firmware versions, this item may be hidden inside the Settings menu. → Notifications and status bar → Lock screen. If you don't find the settings in the first place, check the second path.
After the main switch is turned on, the system will prompt you to choose the display style and format of the content. You can set up the display only of the application icon, message text or preview with the image. For maximum convenience, you should choose the option to Show the content of notifications to see the essence of the message without unnecessary actions.
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If the Lock Screen switch is grey and not activated, check if the Do Not Disturb or Sleep mode is enabled, which can force the screen backlight to be blocked.
Set up individual parameters for applications
Even with a global feature enabled, individual programs can ignore system rules, and the MIUI shell allows for flexible access rights management for each software installed, especially for instant messengers like Telegram, WhatsApp, or email clients, where missing messages is not allowed.
To access the detailed configuration, go to the Settings menu → Notifications and status bar → Notification Center. In the list that opens, find the app you want. Here you're interested in Notifications on the lock screen. Make sure you choose permission to show, not concealment or total shutdown.
- 📱 Telegram: Often requires a separate activation in the Data and Memory section to make messages arrive instantly.
- 📧 Gmail/Email: Check if sync is enabled for a specific account within the app itself.
- 📞 Calls and SMS: System applications usually take priority, but they can also be accidentally disabled in the general list.
It's important to note that some apps have their own internal notification settings that override the system. Go to the settings of the messenger itself, look for the Notifications section, and make sure that it ticks the box opposite to Show on a locked screen.
☑️ Checking of application rights
Impact of energy saving on notifications
One of the most common reasons for the disappearance of alerts is an aggressive battery-saving policy: HyperOS and MIUI are known for their tight control of background processes. If an app falls asleep too deeply, it cannot physically wake the screen to show a new event.
To fix this, add important apps to the exception list. Go to Settings → Battery → Energy Saving. Find a problem app (like Viber or Instagram) and change the mode from Energy Saving to No Limits. This will allow the program to work in the background fully.
| Mode of work | Impact on notifications | Recommendation |
|---|---|---|
| Saving energy | Limits background activity, delays arrival | For rarely used applications |
| Smart mode. | Analyzes usage patterns, can block | Standard system configuration |
| No restrictions. | Full work in the background, instant response | For important messengers and mail |
It is also worth checking the overall energy saving level: If the Ultra-Energy Saving mode is turned on (when there is a few percent charge left and the interface turns black and yellow), all notifications, except for calls and SMS, will be blocked by the system forcibly, exiting this mode will return full functionality.
Why do notifications come with a delay?
Notification style: Classic vs MIUI
Visual display of information depends on the chosen style of the notification center. In the system settings, there is a switch between the style of MIUI (modern, with division into curtain and control center) and Classic (android, single list), and this choice depends on how the preview of messages on the locked screen will look.
In some cases, the transition to classic style solves problems with “lost” icons or incorrect display of text. The switch is on the path of Settings → Notifications and Status bar → Notification Center. Try changing the style and check the result on the locked screen.
In addition, it is worth paying attention to the settings. AOD (Always on Display. If you have AMOLED-screen, "Always screen on" may conflict with normal lock notifications. AOD or choose a style that duplicates incoming messages so you don’t miss them looking at the clock.
Specifics of the work in the mode “Do not disturb”
Do Not Disturb (DND) mode is designed to be quiet, but users often forget to turn it off, surprised by the lack of light and sound when incoming, in which the screen may not light up at all, and notifications may come silently, with no visual effects on the locked display.
Check the status of this mode in the notification curtain or in the Sound and Vibration settings → Don't disturb. Even if the mode is active, you can set exceptions, like allowing interrupts for selected contacts or repeat calls, but for standard messages from apps in this mode, the screen most often stays black.
⚠️ Note: The scheduled Do Not Disturb mode (e.g. 23:00 to 07:00) can be activated automatically. Check the schedule if notifications only disappear at night.
There's also a Pocket Mode feature that prevents accidental taps in your pocket. If the proximity sensor is contaminated or malfunctioning, the phone can "think" what's in your pocket and lock the lock screen even when you hold it in your hands.
Solving system services problems and resetting
If all settings are checked, but notifications still don’t come or the screen doesn’t light up, there may have been a failure in the System UI or notification service, in which case cleaning the cache of system applications without losing personal data helps.
Go to Settings → Applications → All Apps. Search System Interface (or System Launcher) and select Clear → Clear Cache. A similar procedure can be done for the Security app that manages permissions. This is a secure operation that won't delete your photos or contacts.
- 🔄 Reboot: a banal but effective method: Reboot your smartphone to restart all background services.
- 📶 Network: make sure the problem isn't on the Internet. Switch from Wi-Fi to mobile and check for messages.
- 🧹 Memory cleanup: If RAM is full, new processes may not start. Close unnecessary tabs and heavy applications.
As a last resort, if the problem occurs after the update, you may need to reset your network settings or, in rare cases, completely reset to factory settings.Be sure to back up important data in the Mi Cloud cloud or on your computer before doing so.
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90% of notification problems on Xiaomi are solved by setting up the power saving mode “No restrictions” for a particular application.