Many Xiaomi and Redmi smartphone owners face the uncomfortable situation of hearing the other person while talking. Standard system settings often limit the maximum volume of the speaker to protect the user's hearing or due to regional restrictions. However, modern models such as the Xiaomi 13 Pro or the budget Redmi Note have enough technical potential for better sound.
There are several proven ways to get around software limitations: You can use hidden engineering menus, third-party apps to amplify, or just adjust the built-in equalizer correctly. In this article, we will break down each method in detail so you can choose the best option for your device model.
It's important to understand that over-amplification can cause the speaker to be distorted or even out of order. So all manipulations should be done carefully, controlling the output level. Let's look at the underlying causes of quiet sound and how to fix them.
Basic sound setting in the MIUI system
Before you get to the tricky stuff, make sure all the standard sliders are twisted to the maximum. Android on the MIUI or HyperOS shell has separate volume adjustments for media, call and alarm. Often users forget to set the Call profile, relying on the general settings.
Go to the sound settings and look for the "Additional Sound Settings" section, where you can activate the "Revenge Volume in Your Pocket" function, which uses a second microphone to improve audibility when the phone is near your ear, and check if Do Not Disturb" or "Silent Mode" mode is enabled, which can block incoming calls.
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Use aptX HD headphones to check the sound quality – if the headphones sound loud, the problem may be contamination of the main speaker.
Don't forget to check the settings of a particular contact. In the Xiaomi phone book, you can set the individual volume of the call for each caller, and if only one person can be heard quietly, the problem lies in their profile, not in the system.
- 🔊 Open the Settings section and go to the Sound and Vibration section".
- 📞 Click on the item "Loudness" and twist the slider "Call" to the maximum position.
- ⚙️ Go to “Additional Sound Settings” and make sure all improvements are activated.
- 📵 Check that the "Do Not Disturb" mode is turned off in the notification curtain.
⚠️ Attention: Some carriers may limit the sound quality on their side.If after setting up the phone the problem persists, try making a call through another SIM card or messenger.
Using the Engineering Menu to Enhance the Dynamics
The most effective way to turn up the volume is to access the engineering menu, which is a hidden part of the system that's designed for engineers to test equipment, where you can directly control the amplification of audio channels, and most Xiaomi devices use a special code to enter the engineering menu.
Open the Phone app and dial the combination ##3646633##. If the code doesn't work, your firmware may be blocking access and you'll need to use third-party applications like MTK Engineering Mode. From the menu that opens, select the Hardware Testing tab, then go to Audio.
☑️ Check before entering the engineering menu
In the Audio section, you're interested in AudioDebug or LoudSpeaker Mode, and this is the volume level from Level 0 to Level 6. Level 6 is the maximum volume. Choose the right level and set the value in the Max Vol field. The standard value is usually 135, it can be gently raised to 150-160.
When you change your values, be sure to press the Set button to save the settings. No reboot is required, changes are applied instantly. However, be careful: setting too high values can lead to the speaker wheezing.
| Parameter | Standard value | Recommended value | Description |
|---|---|---|---|
| Digital Gain | 0 | 6 | Digital signal amplification |
| Max Vol (Level 6) | 135 | 155 | Maximum volume speaker |
| Step | 4 | 4 | Step of button adjustment |
| Speech Enhancement | Off | On | Improved speech (noise suppression) |
⚠️ Warning: Do not change the values in the partitions that do not relate to the volume of the speaker (for example, Headset or Receiver), if you are not sure about their purpose.
Set up the equalizer and Dolby Atmos
Modern Xiaomi and POCO smartphones are often equipped with built-in audio enhancement modules, such as Dolby Atmos or the Mi Sound Enhancer brand equalizer. The correct configuration of these tools can work wonders, making the conversation of the interlocutor clearer and louder without digital distortion.
To access the settings, go to Settings → Sound and Vibration → Sound Effects. Here you will see the Dolby Atmos switch. Turn it on and select the Voice or Auto profile. If you don't have one, select Music and manually lift the mid-frequency sliders, because that's where human speech is.
Secret code for speaker test
You can also look at the "Mi Sound Enhancer" feature, which is a menu that allows you to select the type of headphones (even if you're listening through the speaker, the choice of "Regular Headphones" sometimes changes the processing algorithms) and adjust the frequencies. Raise the sliders in the 500 Hz - 2 kHz range.
Some users have noted that enabling sound visualization or certain surround effects can, on the contrary, blur the voice of the interlocutor, so it is better to use a profile "Normal" or "Voice" for conversations, disabling the unnecessary effects of spatial audio.
Application of third-party amplifiers
If built-in tools are not enough, Google Play apps come to the rescue, booster programs allow you to programmatically amplify the signal beyond the standard system constraints, and one of the most popular solutions is the Volume Control GO or Precise Volume app.
These applications create a virtual layer on top of the system adjustment. You can set the gain to 200% or even 600%. However, it's worth remembering that software amplification often adds digital noise and wheezing, especially at maximum volume. Use this method only in extreme cases.
- 📲 Download a proven sound amplification app (e.g. Volume Booster) GOODEV).
- 🎚️ Run the program and provide the necessary permissions to access the system.
- 🔊 Smoothly increase the gain slider (Boost), controlling the sound quality.
- 🛑 Don't overestimate. 40-50%, to avoid damage to the speaker.
It is important to understand that such applications work in the background and can consume additional battery power. After completing an important conversation, it is recommended to completely close the application or reset the gain to zero.
Eliminating the Physical Causes of Silent Sound
Often the problem is not the software, but the simple pollution, and the main speaker grid on the bottom of the phone gets clogged with dust, pocket pile and skin fat over time, which physically blocks the sound wave, reducing the volume by 50% or more.
To clean, use a soft toothbrush or dry brush. Walk gently through the speaker's openings. You can use a sticky tape (scotch) to pull dust from the depths, but don't stick sharp objects like needles in order to avoid damaging the membrane.
Another physical cause could be a case. Some safety cases have too narrow cutouts or thick sides that overlap the speaker. Remove the case and see if the volume changes. If so, the problem is solved by replacing the accessory.
⚠️ Warning: Never use liquid (alcohol, water) to clean the speaker directly.The liquid can get inside the housing and cause short circuit or corrosion of the contacts.
Impact of updates and resetting settings
Sometimes a quiet sound is caused by an error in updating the MIUI firmware. Developers can accidentally change audio drivers or customization profiles, in which case it helps to reset all settings to factory, but before that, you should try to clear the cache of system services.
Go to Settings → Apps → All Apps. Find Settings or Sound (if there is a separate process) and click Clear Cache. This will not delete your personal data, but will return the configuration audio files to their original state.
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If the sound is gone after the update, don’t rush to bring the phone to the service, often helping waiting for the next security patch or rollback to the previous version of the firmware through Mi Flash.
As a last resort, if nothing works, a full reset is done, a radical measure that removes all data from your phone, and make sure you back up your contacts and photos before you start the procedure.