Owning a budget-friendly but reliable Xiaomi Redmi 4X smartphone often exposes users to the features of the MIUI shell, which aggressively manages background processes to save battery power. It is because of this that many owners notice that messenger messages or emails come with a delay or do not appear at all until the moment of unlocking the screen. Understanding the logic of the Android system in conjunction with MIUI is the key to solving this problem.
In this article, we will not only take a closer look at the standard ways to activate audio signals, but also the hidden power saving settings that most often block applications, and learn to create exceptions for important contacts and programs to stay connected at any time of the day without sacrificing device autonomy.
⚠️ Note: The menu interface may vary slightly depending on the firmware version installed (Global, China, Stable or Developer).
Before you go into the settings, you need to make sure that the basic physical switches are working correctly. Often the problem is not a software failure, but a basic inattention to the hardware buttons or the speaker state. Check whether the silent mode is installed by a slider on the side (if the model provides) or programmatically through the control panel.
Basic tuning of sounds and vibrations
The first step to personalizing your Redmi 4X is to set up standard profiles, and it offers flexible tools to control how the device will capture your attention. First, go to the main settings menu and select Sounds and Vibrations, and this is where the main audio controls are concentrated.
In the menu that opens, you'll see the separation between system sounds and application notifications. It's important to distinguish between these concepts: system sounds are responsible for interface actions (keystrokes, lock), and notifications are responsible for incoming events. Make sure that the Notification slider is activated and the volume level is set to a comfortable value.
Special attention should be paid to the vibration setting, as in noisy places it can be the only way to learn about an important event. In the vibration menu, you can choose a preset pattern or create your own, setting the duration and intervals.
- 🔊 Select a melody for incoming messages from the list or upload your file.
- 📳 Adjust the vibration force by moving the intensity slider.
- 🔇 Check the Do Not Disturb mode to make sure it doesn't block all sounds.
- 📶 Make sure the notification sound is not turned off in the “No Sound” profile».
If after all the manipulations the sound has not appeared, it makes sense to check whether the device is connected to a Bluetooth headset or speaker that can intercept the audio stream. It is also worth cleaning the speaker from dust, since in the Redmi 4X grid the speaker can clog.
Managing application-specific notifications
Today's users install dozens of apps, and you don't have to hear the sound from each of them. The MIUI shell allows you to flexibly configure access rights for each program separately. To do this, go to Settings, then select Notifications and find Notification Management.
The list that opens will show all installed programs, such as Viber or Telegram, and you can write down behavior scenarios in detail: allow or disable display on the lock screen, allow pop-ups or sound.
It's important to note that for some messengers, there are additional settings inside the application itself that can override the system settings, but system banning in MIUI always takes precedence. If there is a ban, no internal settings will help.
- 📱 Enable the “Allow Notifications” toggle for the main messengers.
- 🔒 Configure the display of content on a locked screen for privacy.
- 🔔 Enable the Sound and Vibration option for selected applications.
- 📉 Turn off notifications for games and news aggregators to avoid distractions.
Remember to review this list periodically. New apps often ask for default notification permission when installed, and after a month your phone may start to annoy with constant ringing from unnecessary services.
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Use the Important feature for favorite apps to have their notifications displayed even in Do Not Disturb mode.
Priority Notifications and Do Not Disturb Mode
Do Not Disturb (DND) mode is a powerful tool for concentration or relaxation, but misconfiguring it can lead to missing emergency calls. In the Xiaomi Redmi 4X, this mode can be flexibly configured, creating exception lists.
To set exceptions, go to Settings → Do Not Disturb. You can set a schedule for automatic mode activation, for example, from 23:00 to 07:00. However, the most important thing is in the subsection “Allow notifications from”.
You can choose to have calls from contacts from Favorites or repeated calls (if the same number rings a second time within 3 minutes) even in silence.
| Parameter | Description | Recommendation |
|---|---|---|
| Sound. | Total shutdown of sounds | Turn it on at night. |
| Visual effects | Blinking of the indicator | Leave it on. |
| Alarm clock | The alarm clock in DND mode | Always include |
| Repeated calls | Call when repeated in 3 minutes | Turn on for safety. |
Also worth mentioning is the Priority Notifications feature, which is separately designed in some versions of MIUI to allow certain dialogs to be marked as urgent, and these messages will come with a special sound, ignoring the general silence settings.
Hidden DND settings
Energy saving and background operation of applications
The most common reason why notifications on Redmi 4X don’t arrive on time is because of an aggressive energy saving policy, which tends to close the background processes to keep the battery power, and often kills messengers.
To fix this, you need to find an app on the installed list and go to its properties. The path usually looks like: Settings → Apps → All apps → select the right one (like WhatsApp).
You have to select the option No restrictions. The default is "Saving Charge" or "Smart Mode", which blocks the connection. Also check the option AutoStart - it should be enabled for instant messengers.
- 🔋 Open the battery settings for each messenger.
- 🚀 Set the operating mode "No restrictions».
- 🔄 Activate Auto Start to keep the app running after the reboot.
- 🔒 Block the application in the menu of running tasks (locks).
Another important thing is to work in the background: make sure that the application settings allow "Background Operations," without this permission, the system will completely stop the process of receiving data as soon as you turn off the program window.
☑️ Checking battery settings
⚠️ Warning: Setting “No Limits” for a large number of applications can significantly reduce Redmi’s running time 4X single-charge.
Advanced settings and advertising blocking
MIUI is known for its built-in advertising, which can come in the form of push notifications from system applications (Mi Music, Mi Video, Browser). To clear the notification space from debris, you need to turn off receiving recommendations.
Go to Settings → Passwords & Security → Access to Data (or some versions of Privacy → Advertising Services) and turn off the “Get recommendations” option here, which will remove intrusive offers from Xiaomi.
Also worth checking is the Security settings. The Security app (green zipper icon) has a Cleanup section. It also hides the Get Recommendations switch, which is often the source of pop-ups.
For advanced users, fine-tuning via ADB is available, but for most Redmi 4X users, the above actions are sufficient.
If you use third-party launchers or themes, they may also have their notification permissions. check them in the shared app list and restrict their access if necessary.
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Disabling system advertising in MIUI is a mandatory step for comfortable use of the smartphone, which will eliminate dozens of unnecessary notifications per day.
Addressing common problems
Even after you've set it up correctly, there can be situations where notifications are unpredictable, like there's sound but the phone doesn't vibrate, or vice versa, often due to a profile conflict or errors in the system itself.
Try resetting notification settings. To do this, look for the menu button (three dots) in the Notifications menu and select Reset Application Settings. This will return all rights to factory values and you will have to reset them, but this often solves software glitches.
If the problem only affects one app, try removing it and installing it again. When you first start, keep a close eye on permission requests — Android should ask permission for notifications, and you should answer “Allow”.
- 🔄 Restart the device after changing the settings.
- 🗑️ Remove the problem app cache through settings.
- 📡 Check the stability of the Internet connection (Wi-Fi and mobile data).
- ⏱️ Make sure the device has the correct time and date.
In rare cases, the problem can be in overcrowded memory. Xiaomi Redmi 4X has a limited amount of built-in storage in the basic versions. If the memory is filled to the end, the system may not have time to process incoming data packets.