Modern smartphones Xiaomi, Redmi and POCO, which are based on the shells MIUI and HyperOS, have powerful functionality, but require a proper configuration to ensure the proper level of privacy. Device owners often face a situation where notifications from instant messengers or banking applications are displayed on a locked display, making the content available to prying eyes. This can become a critical problem if you lose your phone or simply leave it unattended on the desktop.
Fortunately, developers have developed flexible lock screen controls that hide not only the text of messages, but also the application icons themselves. The setup process does not require super-user rights or third-party software installation. All the necessary features are built into the system security menu available to each user. Next, we will discuss in detail how to configure the content for all applications at once or selectively.
Before you start tweaking it, it's worth noting that the algorithms for how the system works may vary slightly depending on the Android version and the specific shell modification. However, the basic logic of how the elements are arranged has remained the same over the past few years. It only takes a few minutes to keep your personal correspondence safe from prying glances.
Global settings for hiding the content of notifications
The easiest and most effective way to hide text is to use the global system settings, which replaces the content of all incoming alerts with a standard phrase, such as "New Notice", hiding the sender and text. To access these settings, you need to go to the Settings menu, then select the Notifications section and the status bar, and find the Lock Screen.
In the settings that open up, you're interested in Hide Content, and activating this switch instantly changes the behavior of the system, so instead of the full text of the message, the locked screen will only display the name of the app or anonymized signal, which is especially true for social networks like Telegram or WhatsApp, where privacy is important.
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If you can’t find the item you want, use the search bar at the top of the settings menu by typing in “block” or “content” requests.
Keep in mind that this setting applies to all applications that have the right to display information on the lock screen. If you want to leave some services open (such as calls or alarms) and others to hide, you will need a more subtle setup through the menu of specific applications, which will be discussed below. Global hiding is a “rough” but reliable method of protection.
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Global concealment of notification content is the first level of protection that is recommended to activate all users without exception.
Selective Hiding for Individual Applications
Often, you need to hide notifications from only certain applications, leaving others visible. For example, you may want to see missed calls but hide messages from an email client or messengers. The MIUI and HyperOS shells have a personal control mechanism for each software installed. Go to Settings → Notifications → Notification Management.
From the list of all installed programs, select the desired application (for example, WhatsApp). Inside the menu, find the section On the lock screen. Here you will be offered several options: show everything, hide the content or not show notifications at all. Choosing the option "Hide content" for a particular application will override the global settings if they are set differently.
This approach allows you to create a flexible configuration that is convenient for your use case, you can leave visible notifications from system services or calendar, but completely close access to personal data in other programs, the system remembers the choice for each application separately.
- 🔒 Messengers: It is recommended to hide content for WhatsApp, Telegram, Viber, so that third parties do not see the text of messages.
- 📧 Email clients: Hiding previews of emails in Gmail or Yandex.Mail will prevent leakage of confidential information from headlines.
- 🏦 Banking apps: It is critical to hide transaction notifications to hide amounts and payees.
Remember that the changes take effect immediately after switching the switch. You don't need to restart the device. If you update the app, the settings may reset, so it makes sense to periodically check their relevance.
Use of "Do Not Disturb" and Profiles
In situations where you want to temporarily turn off all visual and audio signals, including their display on the lock screen, the ideal mode is Do Not Disturb. Unlike simple text hiding, this mode completely blocks the appearance of pop-ups and icons on the locked display while it is active, you can activate it through the control panel (curtain) or in the Sound and Vibration settings.
The feature of this mode on Xiaomi is the ability to fine-tune exceptions. You can allow notifications from selected contacts or re-calls to be displayed even while the mode is active. To access advanced settings, go to Settings → Sound and vibration → Do not disturb.
⚠️ Warning: In Do Not Disturb mode, notifications are not just hidden, but often not delivered until the device is unlocked or the timer is over. Make sure you don't miss an important call by setting up an exception list in advance.
Also worth mentioning are profiles, if available in your firmware version, profiles that allow you to create scripts that automatically change the sound and notification settings based on time of day or location, and are a convenient way to automate privacy protection.
☑️ Checking privacy settings
Second Space Protection and Application Hiding
For users who want the highest level of privacy, the MIUI shell offers a Second Space feature, which is essentially creating a second profile inside a single phone with a separate set of apps, files and, most importantly, a separate lock screen. Notifications from the Second Space are never displayed in the Main Space until you switch to it.
To activate this feature, go to Settings → About Phone (or Advanced Settings) and find Second Space. The system will prompt you to create a separate password or fingerprint to log in. All notifications coming to applications installed in Second Space will be completely hidden from the eyes of the person who has access to the Main Space.
Another layer of protection is Application Hiding, which doesn't hide notifications directly, but hides the app icon from the menu, making it available only through a special code in dialer or through search, making it difficult for an attacker to access notification settings if they do get access to the phone.
| Protection function | Level of concealment | Impact on the battery | Difficulty setting up |
|---|---|---|---|
| Global cover-up | Hiding the text, visible icon | No influence. | Low. |
| Set-up by application | Flexible concealment of text | No influence. | Medium |
| Don't disturb. | Complete concealment of signals | Minimum | Low. |
| Second Space | Complete data isolation | Medium (background processes) | Tall. |
Using Second Space is a radical but very effective method, which turns your smartphone into two independent devices, but it's worth remembering that notifications in an isolated space can come with a delay if the system decides to limit background activity to save energy.
Lock screen settings and Always-On Display
Owners of devices with AMOLED-The screens often use the Always-On Display function (AOD), This is a screen that shows the time and notifications on the screen that's off, and you can hide the content of the notifications separately from the main lock settings. → Lock screen → Always-On Display and Lock screen (the path may vary depending on the HyperOS version).
There's often a separate Hide Notifications switch in the AOD menu, and if it's activated, even if it's on a constantly burning screen, it's only the app logo that's visible, and the text of the message is hidden, which is important because the AOD is visible whenever the phone is on the table.
Why can the notifications still glow?
Also note the style of displaying notifications. In some design themes or when using third-party launchers, system settings may not apply correctly. It is recommended to use standard themes or proven launchers that support native Xiaomi features.
If you have a screen lift feature enabled, notifications can light up every time you pick up your phone, and hiding the content works the same way as a normal touch, providing constant protection.
Decision and additional advice
Sometimes users are faced with a situation where the settings are applied, but the notification text still slips for a moment when it appears. This may be due to the peculiarity of the animation in Android, in which case additional checking of the settings of a particular application in the Application → Application Management section helps.
Find the problem app, go to Notifications, and make sure that notification categories (e.g., "Messages," "Calls") don't tick "Important" or "Priority" if such an option is available. Priority notifications often have a higher display priority and may ignore some lock screen limitations.
⚠️ Note: When upgrading to a new version MIUI or HyperOS, the notification settings can be reset to factory settings. After each major update, it is recommended to recheck the privacy settings.
Another nuance is widgets: Some widgets on the lock screen (if your theme or launcher supports them) can display information regardless of the notification system settings. Disable unnecessary widgets in the lock screen settings to exclude this data leak channel.
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Regularly checking your settings after system updates is the only way to ensure that your privacy remains secure.