Owning a Xiaomi Redmi Note 7 device often involves fine-tuning the interface, as the default MIUI shell is packed with various sound effects. One of the most intrusive, especially at night, is the standard audible alert that plays out every time you plug in the power cable. This sound can be loud and annoying if you're used to using your smartphone as an alarm clock or keeping it close by while you sleep. Fortunately, Android and Redmi Note 7's capabilities allow you to control this setting, although you won't find a standard switch in the settings menu.
It's important to understand that charging sound is not just a system bug, but part of the user interface to inform the owner of the start of the energy recovery process. However, for many users, this feature becomes unnecessary, especially if the device is in silent mode, but the charging sound still reverberates. In this article, we will discuss in detail all the available ways to eliminate this feature, from simple volume switches to more advanced methods of interacting with system files.
Before we go to radical measures, we need to consider the standard features of the operating system. Often users overlook the basic media settings that can affect the volume of system notifications. We will analyze why standard methods do not always eliminate sound completely, and what restrictions the MIUI shell imposes on user actions, which will help you choose the most suitable and safe method for your particular situation.
Analysis of standard sound settings in MIUI
The first step to solving the problem is to carefully study the partition responsible for the audio of the device. In Xiaomi Redmi Note 7, the Settings → Sound and vibration menu is responsible for this. Here the user can adjust the volume of the call, alarm, multimedia and, importantly, system sounds. It is the volume level of system sounds that often affects the volume of the alert when the charger is connected. If the system sounds slider is set to zero, the probability that the charging sound will become quieter or disappear increases significantly.
However, there is a nuance about how MIUI handles power connection events. In some firmware versions, charging sound is not tied to system sounds, but to a media channel or even to a notification channel. This creates confusion, since when media sound is turned off, the alert can still play back. In addition, it is worth checking the active themes. Third-party themes downloaded from the Themes directory can have their own sound packages that overlap the standard system settings.
For a deeper analysis, you can use the engineering menu, but you should do it with caution. Entering the code ##6484### opens the testing menu where you can check the performance of the speakers, but there is usually no direct switching off of the charging sound. However, checking the health of the speakers will help make sure that the problem is not the hardware sticking of the button or the software failure of the audio codec. If the speaker wheezes or makes sounds spontaneously, the problem may be deeper than just adjusting the software.
It's also important to note the effect of Do Not Disturb. When activated, the smartphone blocks most incoming notifications and calls, but system sounds like charging can ignore this. This behavior is designed by developers to ensure that the user is informed about critical battery conditions, although in the case of the Redmi Note 7, this is more of a feature than a necessity. So relying solely on Do Not Disturb mode for quiet charging is not worth it.
Software methods of disabling through settings
There are a number of software tools that reduce the likelihood of sound without root rights. The first and most effective method is to control the volume at the time of connection. Android often remembers the last state of system sound volume. If you minimize the system volume before connecting the cable and then, after the sound appears, return it again, in some versions of MIUI, this can reset the trigger for the current session.
The second method involves turning off the lock sounds. Since the charging sound is often played when the lock screen lights up, turning off the lock screen sounds may help. Go to Settings → Sound and Vibration → Additional (or a similar path in your version of MIUI) and find “Locking Sounds.” Disabling this feature removes the sounds when the screen is turned on and off, which indirectly affects the power connection sound.
- 🔊 Check the "System Sounds" slider in the main audio settings.
- 🔒 Turn off the "Blocking Sounds" option in the advanced sound settings.
- 🎨 Change the theme to standard to exclude third-party sound packages.
- 📵 Activate Do Not Disturb mode and check the exception settings.
The third software method is automation. Automation applications like MacroDroid or Tasker can track a power event and instantly set the volume of media or system sounds to zero, and then return it back in a second, so quickly that the user may not notice the changes, but the audio file itself will simply not be played or will be silenced, which requires the installation of additional software, but is a very flexible solution.
☑️ Checking the sound settings
It’s worth mentioning the Pocket Mode feature, which sometimes conflicts with sensors and audible notifications. While in Settings → Lock and Protection → Pocket Mode, try experimenting with turning this option on and off. Although it’s designed to prevent accidental taps in your pocket, it’s working on handling proximinity sensor events, which in rare cases can affect the behavior of the sound subsystem when you connect a charge.
Using third-party applications for sound management
When the Xiaomi Redmi Note 7 is not enough, specialized applications from the Google Play store come to the rescue. These utilities allow you to manage audio profiles with much more detail than a standard control panel. One popular solution is the “Volume Control” application, which allows you to create volume profiles for various events, including connecting a charger.
The principle of operation of such applications is based on the interception of a system event. ACTION_POWER_CONNECTED. When you connect the cable, the app instantly responds and applies a predefined volume profile. You can set up a Charging profile, where the volume of system notifications and media is set to the level of the system. 0%. This ensures that even if the system tries to reproduce the sound, it will be silenced by software.
⚠️ Note: When installing audio management applications, carefully check the permissions requested. Some programs may require access to contacts or locations that are not necessary for their primary function.
Another class of applications is system modifiers that don't require root rights, but use accessibility. They can press volume control buttons virtually faster than a person. For example, an application can be configured to automatically lower volume when power is connected, and then return volume after 2 seconds. This creates a silent charging effect. However, such applications can consume additional battery power in the background, which creates an ironic situation.
Among the popular applications should be highlighted:
- 📱 MacroDroid is a powerful tool for creating macros, including sound management.
- 🔇 Volume Notification – allows you to set the volume for different types of notifications separately.
- ⚙️ Sound Assistant – Provides advanced equalizer and mixer management.
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Use automation applications with caution: changing the volume too often can lead to micro-latency in the Redmi Note 7 interface.
Working with system files and sound circuits
For advanced users willing to risk system stability for the sake of complete silence, there is a method of replacing the system sound file, which requires root rights or the use of special file managers with access to the system partition, the essence of the method is to find the file responsible for the charging sound and replace it with an empty audio file (silence) with the same name and format.
The audio files in Android are usually in the directory /system/media/audio/ui/. The file responsible for charging can be called WirelessChargingStarted.ogg, ChargingStarted.ogg or have a similar name depending on the version of MIUI. Before making changes, be sure to back up the original file. If something goes wrong, you can restore the original state.
The replacement process is as follows:
- Find the original charging sound file in the system folder.
- Copy it to a safe place on your computer or in the cloud.
- Create an empty audio file (silent.ogg) of the same format and bitrate.
- Rename the empty file in the name of the original system file.
- Replace the original file in the system folder with your empty file (superuser rights required).
Risks of replacing system files
An alternative to manual replacement is to use modules for Magisk if your Redmi Note 7 has an unlocked bootloader and superuser rights installed. There are modules such as "Silent Charging" that automatically replace system sounds when booting, without physically changing files in the /system partition. This is a safer method, since it is reversible: just remove the module in the Magisk Manager app, and everything will return to its place.
Comparison of methods of switching off sound
To make it easier for you to choose the right method, we have prepared a comparative table of methods, each of which has its advantages and disadvantages, depending on your level of technical training and the desired result. Some methods require additional software installation, others require deep intervention in the system.
| Method | Difficulty | Efficiency | Risks. |
|---|---|---|---|
| Volume settings | Low. | Medium | Absent. |
| Third-party annexes | Medium | Tall. | Battery consumption |
| Replacement of the system file | Tall. | Maximum | Tall (Root) |
| Flight mode | Low. | Low. | Lack of communication |
As you can see from the table, volume control is the safest, but not always the most effective, and the most effective, but also the riskiest, is to replace system files. Third-party applications are in the middle of a situation where they are efficient and relatively safe, but require additional software to be installed. The choice depends on how much time and stability you are willing to sacrifice for the absence of one short sound.
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The optimal balance between safety and efficiency for most Redmi Note 7 users is the use of automated applications such as MacroDroid.
Frequently Asked Questions (FAQ)
Why does the sound of charging appear even in silent mode?
Does turning off the charging sound affect the battery charge speed?
Will the sound setting reset after the system update?
Can you remove just the start-of-charging sound, leaving the full-charging sound?
Is it safe to use apps from the Play Market to manage system sounds?
To sum up, the Xiaomi Redmi Note 7 provides a flexible personalization tool, although it sometimes requires a custom approach. From simple volume reduction to complex automation, you can choose the level of intervention that is comfortable for you. The main thing is to act consistently and be aware of the possibility of rollback changes if you decide to experiment with system files.