The sudden stop of displaying notifications from banking applications, instant messengers or system services on Android is most often caused by accidentally turning off notifications in the settings menu or resetting privacy settings after a firmware update.
Restoring the operation of notifications requires a consistent approach, since in modern versions of the operating system their management has become multi-level. You have to check not only global switches, but also the settings of specific applications, and also make sure that the power saving mode does not block the background work of apps. In this article, we will analyze in detail each stage of diagnostics and correction.
Global check of notification settings
The first step is to verify the general state of the system. Sometimes users accidentally enable Do Not Disturb mode or turn off the notification bar completely in General Settings. This is the simplest level of verification, which is often overlooked, moving straight to complex actions.
Go to the menu Settings and find the section Notifications. Depending on your device model (for example Samsung Galaxy or Xiaomi Redmi, this item may be called “Notifications and status bar”). Make sure the main slider is in the active position. If it is turned off, then no application will be able to send you a signal, regardless of its internal settings.
It is also worth paying attention to the parameter "Lock screen". If notifications come when the phone is unlocked, but disappear when the screen is locked, this is where the problem lies. The system may be configured to hide the contents of messages for security purposes, which creates the illusion of their absence.
- 🔍 Check if Do Not Disturb mode is turned on in the quick settings curtain.
- 📱 Make sure that the lock screen settings allow the display of icons and text.
- 🔔 Activate the “Pop-up notifications” function for priority applications.
⚠️ Attention: On some skins, such as OneUI or MIUI, there are additional “Unimportant notifications” filters that automatically hide ads and spam. Check this folder before you consider notifications missing.
Setting rights for a specific application
If the global settings are in order, the next step is diagnosing specific software. Modern versions Android (starting from 8.0 Oreo) have introduced a system of notification channels. This means that you might not have disabled the entire application, but only a certain type of event within it, for example, “Marketing Emails,” while leaving “Private Messages” active.
To fix this, go to Settings → Applications. Find in the list a app from which no signals are received (for example Telegram, Viber or a banking application). Click on it and select Notifications. Here you will see a detailed list of all categories of alerts available for this application.
Carefully study each item in the list. Some categories may have status "Disabled" or “Mute”. You need to click on the category name (not on the switch, but on the title text) to get into the deep settings menu for this channel. This is where you can return sound, vibration and the ability to appear on the lock screen.
☑️ Checking application rights
Pay attention to the switch "Show notifications" at the very top of the application menu. If it is turned off, then all internal channel settings become inactive. Enable it to reactivate the settings branch.
Exception from battery optimization
One of the most insidious reasons for the disappearance of notifications is the aggressive operation of the energy saving system. Smartphone manufacturers strive to increase battery life, sometimes at the expense of background app activity. If the system puts an application to sleep, it cannot connect to the server and receive a new message.
To solve this problem, find the section Battery or Energy consumptionin the application settings. You need to change the operating mode from “Optimized” (or “Smart Saving”) to "Unlimited" or “No Limits”. This action will give the application the right to work in the background constantly, without interrupting the connection when the screen is off.
On devices Xiaomi, Huawei i Honor this process may be hidden deeper. Often you need to go to the “Security” or “Phone Manager” application, find the “Running Applications” section and manually allow auto-run and background work for the desired app. Without this step, the system will forcefully close the process every few minutes.
⚠️ Warning: Disabling battery optimization increases power consumption. It is recommended to use this method only for instant messengers, email clients and important work tools, and not for games or entertainment applications.
Also check if the “Power Saver” or “Ultra-Saving” mode is enabled on your phone. In these modes, background data synchronization is often disabled at the system level for all apps at once.
Resetting application notification settings
Sometimes a software glitch causes the settings to become stuck in an incorrect state, and normal switches stop responding to presses. In this case, an effective solution is to completely reset the settings of a particular application to the factory state.
This procedure will not delete your personal data, correspondence or media files within the application, but will return all settings, including notifications, to the “as after installation” state. To perform a reset, go to Settings → Applications, select the desired software and click Storage.
In the menu that opens, find the button Reset or Clear settings (not to be confused with “Clear data”, which will delete accounts). After confirming the action, the system will overwrite the configuration files. The next time you launch the application, it will request permissions again, and notification channels will be activated by default.
What to do if the reset button is inactive?
If the "Reset" or "Clear settings" button is inactive (gray), this may mean that the application is system or has device administrator rights. Try first revoking administrator rights in the "Security" → "Device Administrators" section, and then try the reset again.
After performing the reset, be sure to open the application and check its internal settings. Some apps (for example WhatsApp or Viber) have their own notification settings menus inside the interface, which can overwrite system settings when first launched after a reset.
Checking system restrictions and data access
In new versions Android (12, 13, 14 and newer) additional levels of privacy control have appeared. An application may have permission to send notifications, but not have access to the Internet in the background or the right to use mobile data.
Go to the application settings and find the item Mobile data and Wi-Fi. Make sure the switch "Background mode" is activated. If it is turned off, the application will only be able to receive messages when it is open on the screen, which completely excludes receiving pushes the rest of the time.
Also check the section Permissions. Although there is no separate permission for notifications, their operation may be indirectly affected by the lack of access to contacts or storage if the application’s operating logic is tied to this data. However, the key factor remains network access.
| Parameter | Recommended value | Impact on notifications |
|---|---|---|
| Background data | Allowed | Critical: without this push notifications will not come |
| Unlimited Internet | Enabled | High: protection from saving mode |
| Saving traffic | Excluded | Medium: may block synchronization |
| Autostart | Allowed | High: important for Chinese shells |
Background data access is the most important technical parameter. Without it, the application cannot physically contact the server to find out about a new message.
If you are using the “Traffic Saver” mode on the system, make sure that your application is added to the exceptions list. Otherwise, the system will block data transfer for all apps except those you are using right now.
Radical measures and software updates
If none of the above methods helped, the problem may lie in a deep system failure or a software version conflict. In this case, it is worth considering more drastic steps, such as uninstalling and reinstalling the application.
A complete reinstallation allows you to clear all cached data and configuration files that may have become corrupted. Delete the application, restart your smartphone and download the latest version from the official store Google Play or Galaxy Store. This ensures compatibility with the current version of the operating system.
Also check for updates for the system itself Android. Go to Settings → System → Software update. Developers often release patches that correct errors in the operation of the notification service (Notification Manager) that may have arisen after previous updates.
⚠️ Attention: Before deleting the application Make sure you remember your login information (username and password) or that your account is linked to your phone number/mail so as not to lose access to your data after reinstallation.
As a last resort, if notifications do not work in any application, you can reset the network settings. This action will return Wi-Fi, Bluetooth and mobile network settings to factory defaults, which often solves problems with hidden network blocking.
Before resetting network settings, write down the passwords for your Wi-Fi networks, as they will be deleted from the phone's memory and will require re-entering.
Frequently asked questions (FAQ)
Why do notifications arrive with a long delay?
The delay is most often caused by the power saving mode, which limits the background activity of the application. The reason may also be an unstable Internet connection or overload of the servers of the service itself. Try disabling battery optimization for a specific application.
How can I get the notification sound back if it has disappeared?
The sound may have been disabled at the notification channel level. Go to application settings → Notifications, click on the name of the category (for example, “Messages”) and in the menu that opens, select “Sound”, then specify the desired melody. Also check the overall sound profile in the curtain.
Can a third-party launcher block notifications?
Yes, some third-party launchers (desktop shells) may conflict with the standard Android notification panel. Try temporarily switching to the system's standard launcher to see if the notification icon appears in the curtain.
What to do if the notification slider is gray and not clickable?
This means that the application is disabled or frozen. Go to the application settings and click the “Enable” button. If the app is a system app and cannot be enabled, it may have been uninstalled for the user via ADB or disabled in Safe Launch.
Does Do Not Disturb mode affect the alarm?
Usually the system alarm will ring even in Do Not Disturb mode, but notifications from apps will be hidden. However, the settings can be changed by the user. Check the rules in the Do Not Disturb section to ensure that alarms are not added to exceptions by mistake.