How to turn on stereo on Xiaomi Mi 8: all ways + problem solving

Xiaomi Mi 8 is the flagship of 2018, which is still popular among users due to its powerful hardware and flexible settings. However, many owners face the problem: instead of the expected stereo sound, the smartphone plays audio only through one speaker. The reason lies in the hardware features of the model and the software limitations of MIUI. In this article, we will discuss how to use both speakers for a full stereo effect, including hidden settings and alternative methods.

It’s important to understand that the Mi 8 is physically equipped with two speakers, but by default the second one works only as a conversational one (for calls). The manufacturer does not activate the stereo mode in standard firmware, leaving it for multimedia flagships like the Mi 8 Explorer Edition. However, you can bypass this limitation – and we will show you how to do this safely, without the risk of “bricking” the device.

Why is the Xiaomi Mi 8 not stereo sounding by default?

Structurally, the Mi 8 has two speakers: the main (bottom) and the conversational (top, next to the selfie camera).

• 🔊 The top speaker is used only for calls and notifications (mono mode).
• 🎵 The bottom speaker is responsible for multimedia, games and music.
• 🔧 Programmatic limitation MIUI Blocks the simultaneous operation of both speakers for stereo effect.

Xiaomi chose this scheme to save battery power and prevent overheating, but users have found workarounds through engineering menus, modified firmware and third-party applications. Below we will look at all the working methods, starting with the safest.

Method 1: Activate stereo sound through an engineering menu (without root)

The most reliable method is the use of a hidden engineering menu (MTK Engineer Mode), which does not require super-user rights and works on most versions of MIUI (including global and Chinese).

1. Open the Phone app and enter the combination: ##36446337## After dialing, the Engineer Mode menu will open.
2. Go to Hardware Testing → Audio → LoudSpeaker Mode.
3. In the Speaker Mode field, select the Stereo value (if there is no such item, see next step).
4. Press Set, then restart the smartphone.

⚠️ Note: Some firmware may not have a Stereo item, in which case try an alternative route:

⚠️ Warning: If the sound is quieter or distortions occur after the settings change, return the Speaker Mode value to Normal and restart the device.

Check out the MIUI version (Settings → About the phone)

Charge your smartphone at least 50%

Close all background applications

Backup important data (settings) → Additionally. → Backup)-->

Method 2: Use the SoundAbout app (for Android 8-10)

If the engineering menu doesn't work, try Google Play's third-party SoundAbout app, which allows you to reassign audio streams and force both speakers to activate.

1. Install SoundAbout (free version with restrictions).
2. Open the app and give access to the sound settings.
3. Select the Media Audio tab (Multimedia).
4. In Speaker, activate Force stereo (all) option.
5. Restart the player or video – the sound should become stereo.

Important: On some MIUI firmware, the application may not work due to manufacturer restrictions, in which case, try disabling battery optimization for SoundAbout in the application settings.

• ✅ Pros of the method: does not require root, reversible changes.
• ❌ Cons: Can be reset after reboot, does not work in games.

Method 3: Modified firmware (for power users)

For those who are ready for radical measures, there are custom firmware with already activated stereo sound, such as the Pixel Experience or LineageOS for the Mi 8 (dipper).

• 🔧 Full support for stereo speakers out of the box».
• 📱 No restrictions MIUI (For example, blocking the engineering menu).
• 🔄 Regular security updates.

⚠️ Note: Installing custom firmware requires unlocking the bootloader and can lead to loss of warranty.In addition, not all modifications work stably with the Mi 8 iron (especially with the module). NFC camera-wise).

Method 4: ADB-commands for forced stereo switching

For users familiar with Android Debug Bridge (ADB), there is a way to activate stereo sound via console commands. This method works on MIUI 10-14 and does not require root rights.

1. Install ADB Tools on your PC.
2. Turn on USB Debugging on your smartphone (Settings → About Phone → MIUI version – press 7 times, then go back to Additional → For Developers).
3. Connect Mi. 8 To PC and execute in command line: adb shell settings put global stereo_speaker true
4. Reset the device.

If the team doesn’t work, try an alternative:

adb shell am start -n com.android.settings/.Settings\$SoundSettingsActivity

Then manually select the stereo mode in the sound settings (if the item appears).

💡

Before use ADB Check that Xiaomi drivers are installed on a PC. If the commands don't execute, try reconnecting. USB-cable or use the original cord from the kit.

Problems after stereo sound inclusion and their solutions

Even after successful activation of the stereo mode, Mi 8 users may experience side effects, and consider the typical problems and ways to fix them:

• 🔇 The sound is quieter: This is normal — with stereo, the load is distributed to two speakers. Increase the volume in the settings or use an equalizer (like Wavelet).
• 🔄 Stereo only works in some apps: Check the audio output settings in each app separately (e.g. YouTube or Spotify).
• 🔥 Overheating speakers: With prolonged playback at maximum volume, the top speaker can warm up%.
• 🔊 High frequency distortion: This is a hardware constraint of the Mi 8. Try turning off the bass amplification in the equalizer.

If after manipulation the sound is completely lost, reset the sound settings:

⚠️ Warning: Before resetting, turn off all Bluetooth devices (earphones, speakers) to avoid audio route conflicts.

adb shell settings delete global stereo_speaker

Frequent questions about stereo sound on Xiaomi Mi 8

Let’s discuss the most popular questions of users who are trying to activate stereo speakers on the Mi 8:

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The most reliable way to activate stereo sound is through an engineering menu. If it's not available, use it. ADB-Castom firmware gives the best result, but it is suitable only for advanced users.