Xiaomi 12 is a flagship with a powerful speaker, but sometimes users are not loud enough when calling, listening to music or watching videos. The reasons may lie in both the software limitations of MIUI and the hardware features of the model. In this article, we will discuss all ways to increase the volume, from basic settings to hidden parameters of the engineering menu and third-party utilities.
It's important to understand that the maximum volume is limited by the manufacturer not only because of the technical characteristics of the speakers, but also to protect the user's hearing. However, in some situations (for example, in a noisy room or when using the phone as a speaker), these restrictions can be circumvented. We will consider safe methods that will not damage the device, but will give a noticeable increase in sound.
If the volume is low after all these methods, the problem could be physical damage to the speaker or contamination of the grid, which would require a diagnosis at a service center, but software solutions help in 90% of cases, and we'll discuss them below.
1. Basic volume settings in MIUI
Start by checking the obvious parameters. In Xiaomi 12, the volume is adjusted separately for different scenarios: media, calls, alarms and notifications. Often users turn up the volume of music, but forget about the call settings.
How to check:
- 🔊 Press the physical volume button on the sidebar and select the desired mode (column icon for media, call tubes).
- 📱 Go to Settings. → Sound and vibration → Volume and manually adjust sliders for each type of sound.
- 🔔 Turn on the option to Change the volume buttons, if it is turned off – this will allow you to quickly adjust the sound without unlocking the screen.
Note the No Sound slider — if it is activated, all other volume settings will be blocked, and check if the Do Not Disturb mode is on (the crescent icon in the notification curtain).
⚠️ Attention: In some firmware MIUI When you update, you reset the volume settings for the alarm clock.
2. Enabling sound amplification in the developer settings
The hidden Developer Menu allows you to disable some MIUI restrictions, including volume limits, which works on all Xiaomi models, including the Xiaomi 12, 12 Pro and 12X.
How to activate:
- Go to Settings → About Phone and click on the MIUI version 7 times until the notification “You became a developer!” appears.
- Return to the main settings menu and open a new section → For developers.
- Find the option to turn off the absolute volume and turn it off (translate the slider to the left).
- Reboot the phone.
This option eliminates the forced volume limit through Bluetooth and some apps (such as YouTube or Spotify). After turning off, check the volume in your headphones and speakers - the difference can be as much as 20-30%.
Activate Developer Mode (7 taps according to MIUI)
Backup of important data
Charge your phone at least 50%
Shut down. VPN (It can block access to certain parameters)-->
3. Engineering menu: manual volume setting of speakers
The Engineering Mode gives you access to low-level audio parameters, including amplification of the signal on the speakers, a method that requires caution — incorrect settings can lead to distortion of sound or overheating.
Instructions for Xiaomi 12:
- Open the Phone app and type in the combination: ##36446337## (alternative code: ##4636## → select Hardware Testing → Audio).
- From the Hardware Testing menu, select Audio → LoudSpeaker Mode.
- In the Max Vol section, increase the value of: 🔈 Media (music, video) – maximum 160 (default 140-150). 📞 Ring (calls) - maximum 150. 🛎️ Alarm (Alarm) – maximum 155.
Save the settings and restart the phone.
After the changes, test the volume gradually, because a sharp increase in values can cause wheezing, and if the sound becomes distorted, return the parameters to the factory.
| Parameter | Default value | Recommended maximum | Risks in excess |
|---|---|---|---|
| Media | 140–150 | 160 | Distortion of sound at high frequencies |
| Ring | 120–130 | 150 | Wheezing at loud signals |
| Alarm | 130–140 | 155 | Overheating of the speaker with prolonged sound |
| Headset | 100–110 | 120 | Headphone damage |
⚠️ Warning: Increasing values above 160 for Media or 155 for Alarm can cause physical damage to the speaker. Xiaomi 12 uses stereo speakers with a small membrane sensitive to overloads.
4. Apps to amplify sound: top-5 utility
If standard methods don't work well, use third-party apps, which work on two principles:
- 🔧 Signal amplification at the program level (equalizer emulation).
- 🎛️ Bypassing Android Restrictions by Modifying the Sound Stack.
The best apps for Xiaomi 12:
| Annex | Type of reinforcement | Volume up. | Cons |
|---|---|---|---|
| Equalizer FX | Equalizer + amplifier | up to +15 percent | Paid version for full functionality |
| Volume Booster | Modification of the sound driver | +25% | May cause delays in sound |
| Music Volume EQ | Equalizer presets | up to +10% | Does not work with some streaming services |
| Sound Booster | Strengthening through a virtual driver | up to +30% | Requires root for maximum effect |
| Viper4Android | Complete customization of sound | up to +40% | Complicated setup, drivers needed |
To install Viper4Android on Xiaomi 12, you will need:
- Download the official drivers for your version of Android.
- Install the application via APK (available on XDA Developers).
- Enable sound processing in Settings → Sound → Sound effects.
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Before installing audio amplification applications, check that they are compatible with your version of MIUI. Some utilities conflict with the shell and cause speaker malfunctions.
Verification of the physical condition of the speakers
If the software methods didn't help, the problem could be the hardware. Xiaomi 12 is equipped with two speakers:
- 🔊 Lower speaker (main, for low frequencies).
- 🔊 Upper speaker (additional, for high frequencies, used as a conversational speaker).
How to diagnose a malfunction:
- 🎵 Play the test sound (e.g. here) at maximum volume, and if one of the speakers is silent or wheezing, it's damaged.
- 🔍 Light a flashlight into the speaker grid: dust, hair, or moisture can block the sound.
- 📱 Check if one of the speakers is disabled in the settings: Settings → Sound. → Speakers (must be "Stereo").
Common causes of low volume:
- 🚫 Grid pollution – clean with a soft brush or compressed air.
- 💧 Moisture infestation – if the phone fell into the water, the speakers could oxidize.
- 🔧 Detachment of contacts - requires dismantling and soldering (only in the service!).
- 🔋 Weak battery - with a low charge (<15%) system automatically reduces volume.
What to do if the speaker is wheezing at maximum volume?
6. Alternative methods: Bluetooth amplifiers and external speakers
If the internal speakers of Xiaomi 12 are not up to the task, consider external solutions:
- 🎧 Bluetooth headphones with amplifier (for example, Sony) WH-1000XM5 or JBL Live 660NC) — give a clear sound without distortion.
- 🔊 Portable speakers (e.g. Xiaomi Mi Portable Bluetooth Speaker) – connect via Bluetooth 5.2 and work as an external amplifier.
- 🎛️ USB-C amplifiers (e.g. iFi Audio hip-dac) – connect directly to the phone and improve the sound in headphones.
- 🚗 FM-Transmitters (e.g. Baseus Car) FM Transmitter – transmit the sound to the car’s tape recorder.
To connect external devices:
- Activate Bluetooth in the settings and pair the device.
- In Settings → Connected Devices → Bluetooth Settings, select the High Quality Sound (AAC or aptX) profile.
- In a player application (for example, Poweramp), enable the option "Direct Output".
⚠️ Note: When using cheap Bluetooth adapters (for example, to connect to old speakers) may appear latency up to 300 ms. For games or videos, this is critical – choose adapters with support for aptX Low Latency.
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External amplifiers and speakers are the only safe way to significantly increase volume without the risk of damaging the phone’s speakers.
7. Resetting the sound settings to factory
If after experiments with sound there were distortions, wheezing or one of the speakers stopped working, reset the settings:
- Go to Settings → System → Resetting settings.
- Select Network, Sound and Display Reset (does not affect personal data).
- Confirm the action and wait for the reboot.
After discharge:
- 🔄 All custom audio settings (equalizer, volume) will return to factory.
- 🔊 All third-party sound amplifiers will be turned off (you will have to install them again).
- 📱 Restore the standard distribution of sound between speakers (stereo-balance).
If the reset didn’t work, try updating your firmware to the latest version of MIUI. New builds often fix sound bugs. Check for updates in Settings → About Phone → System Update.