How to return the sound speaker on Xiaomi Redmi Note 7: 7 proven ways

Xiaomi Redmi Note 7 is one of the most popular mid-range smartphones, but even it can have problems with sound over time. Users often face a situation when the speaker suddenly stops working: there is no sound when calling, music is silently playing or there is no audio in the video at all.

In this article, we'll look at all the ways you can recover sound on the Redmi Note 7, from simple software solutions to hardware problems, and learn how to check the speaker's performance, reset the sound settings, update the firmware, and even what to do if the problem is in the headphone jack, and if you've tried any of these, you may have missed an important nuance that will help in your case.

1. Checking basic sound settings

Before you sin on a break, make sure that the problem is not the trivial settings. On the Redmi Note 7, the sound may be lost due to:

• 🔇 Disconnected Media Sound – a separate regulator for music and video.
• 🔔 Do Not Disturb – Blocks all notifications and calls.
• 🎧 Active headphone connection – the smartphone “thinks” that they are inserted.

To rule out these reasons:

1. Press the physical volume button up/down, and a slider will appear on the screen, and make sure it's not at a minimum or crossed out.
2. Pull the notification curtain down and check if the Do Not Disturb mode is activated (the bell icon with cross-out).
3. Connect and disable the headphones – sometimes the contacts in the 3.5mm connector “stick” and the system mistakenly identifies them as connected.

⚠️ Warning: If the sound does not return after the headphones are removed, try blowing the connector with compressed air (for example, a spray for cleaning equipment.

2. Resetting the sound settings to the factory

If the basic manipulations didn't work, the next step is to reset the settings associated with the sound, which will return to the default parameters:

• 🔊 Volume levels for each type of sound (media, bells, alarm clock).
• 🎵 Equalizer and sound effects (e.g. Mi Sound Enhancer).
• 📵 Bluetooth audio settings (if the problem occurs when connecting to speakers/earphones).

How to reset your settings:

1. Open the Settings. → Sound and vibration.
2. Scroll down and select Additional settings.
3. Press Reset sound settings and confirm the action.

After you reset, restart your smartphone. If you hear a sound, it was the software problem. If you don't, move on to the next step.

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Redmi Note 7 has a hidden speaker testing feature, so to activate it, type ##4636## in the Phone app, then select Equipment Testing → Audio, where you can check both speakers (top and bottom) separately.

3. Diagnostics of hardware problems

If the software methods didn't work, it might be the hardware problem. Redmi Note 7 most often fails:

• 🔊 Lower speaker - responsible for media sound and conversational (in hands-free mode).
• 📞 Top speaker (conversational) – used only for calls.
• 🎧 3.5 mm connector - oxidation of contacts or mechanical damage.
• 🔌 Dynamic plume - moves away from the motherboard when falling.

How to check:

On the Redmi Note 7, the bottom speaker is combined with a microphone - if the microphone in hands-free mode is lost along with the sound, the problem is precisely in this module.

4. Update firmware and reset to factory settings

Bugs in MIUI firmware can cause sound problems, for example, after an update, some users find that the speaker is only running at 50% volume or is completely silent.

Method 1: Update MIUI

1. Go to Settings → About the phone → System update.
2. Click Check Updates and install the latest version.
3. After the update, reboot.

Method 2: Reset your phone to factory settings

It's a radical method, but it works in 80 percent of software failures. Importantly, back up your data first!

Save photos/video to PC or cloud |Export contacts to Google Account |Remember passwords from Wi-Fi and accounts |Remove SIM and memory card (optional)

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Instructions:

1. Open Settings → Additional → Recovery and Reset.
2. Select Settings Reset.
3. Confirm the action and wait for the completion (it will take 5-10 minutes).

⚠️ Attention: If the sound doesn't appear after the reset, and the firmware is the last, it's almost exactly a hardware problem.

5. Check the headphone jack and Bluetooth

Sometimes the sound is lost not because of the speakers, but because of conflicts with other audio devices.

Problem 1: Smartphone “thinks” that the headphones are connected

This is one of the most common reasons why even if the headphones are not inserted, the system can mistakenly identify them as connected.

• 🧹 Clean the connector with a cotton swab soaked in alcohol (carefully!).
• 🔄 Reboot your phone – sometimes it helps to “reset” the connector state.
• 🛠️ Disable the headphones: adb shell settings put global wired_headset_connection_state 0 (connection is required ADB).

Problem 2: Conflict with Bluetooth devices

If you plug in wireless headphones or speakers and then you turn them off incorrectly, the sound can be redirected to them.

1. Open the settings → Connected devices.
2. Click on Bluetooth and remove all saved devices.
3. Turn off Bluetooth and restart your phone.

6. Alternative methods of sound recovery

If standard methods don’t help, try these non-obvious solutions:

Method 1: Use Safe Mode (Safe Mode)

Load your phone in Safe Mode to check if any app is blocking the sound:

1. Press the power button until the shutdown menu appears.
2. Press and hold the “Switch off” option – a prompt will appear to go to Safe Mode.
3. Confirm and check the sound. If it works, remove the newly installed applications.

Method 2: Check the sound through the engineering menu

The engineering menu allows you to test the speakers bypassing system settings:

1. Enter the phone app ##36446337##.
2. Choose Hardware Testing → Audio.
3. Test Speaker (speaker), Receiver (top speaker) and Headset (headphones).

Method 3: Fastboot phone search

If the sound is gone after a failed update, full flashing will help. This is an extreme method — requires a PC and knowledge of fastboot commands. Detailed instructions for the Redmi Note 7 (codename lavender) can be found on the XDA Developers forum.

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If the sound is on the engineering menu, but it doesn't work on the system, the problem is the firmware. If it doesn't work there, it's a hardware malfunction.

7. When to contact the service center

If you've tried all the ways and the sound never comes, you just have to repair it.

• 🔧 The speaker emits wheezing or crackling - this is a sign of physical damage to the membrane.
• 💧 The phone fell into the water or was exposed to severe humidity - could oxidize the socket or plume.
• 🔌 The sound disappears when you press the body - the plume or contacts go away.
• 🔊 In the engineering menu, speakers do not emit sound - 100% hardware breakdown.

Cost of repair:

Before the service visit:

• 📋 Write down when the sound disappeared (after the drop, updates, etc.).
• 🔄 Try to reset your phone – some services charge extra for this procedure.
• 🛡️ Check the warranty – if the phone is under 12 months old, repairs may be free.

Frequently Asked Questions (FAQ)