Why Xiaomi can hear an echo of your voice while talking on the phone: technical reasons and solutions

You're talking on a Xiaomi phone, but instead of pure sound, you hear an annoying echo of your own voice? This problem is common for smartphone owners of the brand regardless of the model — whether it's a budget Redmi Note 12 or flagship Xiaomi 14 Ultra. The reasons can lie in both the software settings and hardware features of the device.

The "hearing yourself in the tube" effect is caused by the delay of the audio signal or its duplication in the audio processing system. In some cases, the person is to blame (for example, if he uses a speakerphone), but more often the problem lies in your phone. In this article, we will analyze all possible scenarios, from the banal activation of the voice function to serious malfunctions of the speaker or microphone.

Important: if the echo appears suddenly after the MIUI update, drop of the phone or contact with moisture, this is an occasion to check the hardware, otherwise, adjusting the settings or resetting the communication settings will help.

1. Voice amplification or speaker mode is activated

The most common cause of echoes is the activation of Voice Amplification (some firmware called Voice Enhancement or HD Voice), which is designed to improve audibility in noisy conditions, but if the microphone is poorly connected or set up, it can create a feedback loop.

How to check:

• 📱 Open the Phone app and dial ##4636## (test menu).
• 🔊 Go to the Audio Information tab and see the Voice Enhancement status.
• 🔄 If Enabled status is active, try turning it off through call settings.

In the new versions of MIUI (14+) the path to disconnect is:

1. Go to Settings → Applications → Phone → Call settings.
2. Find the option to improve your voice or HD-Call and deactivate it.
3. Restart your phone and check the quality of the connection.

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If your local operator supports VoLTE (voice through the Internet) 4G), Try to disable this function in Settings → SIM-maps and mobile networks → [yours SIM] → Use VoLTE. Sometimes the echo is caused by codec conflict when you're sending voice over a voice. IP-network.

Microphone problems: pollution or damage

The echoes can come from a microphone that's not only picking up your voice, but also the sound from the speaker, and this is typical of:

• 🧹 Contaminated microphone (dust, pile, greasy prints).
• 💧 Moisture entering the microphone module (even after complete drying, the contacts can oxidize).
• 🔨 Mechanical damage after falling or impacting.

How to diagnose:

1. Write down a voice message on WhatsApp or a voice recorder, and if the sound is distorted or if you hear foreign noises, the microphone is a problem.
2. Try calling through headphones (if the echo disappears - the main microphone is to blame).
3. Examine the microphone hole (usually located at the bottom of the case next to the USB-C connector) for contaminants.

If the microphone is physically damaged, it will need to be replaced, and in Xiaomi models with a dual microphone (for example, the Redmi Note 11 Pro+), echoes can occur due to mismatch between the main and secondary microphones, in which case only the service center will help.

3. Conflict with applications for recording conversations

Many users install third-party programs to record phone conversations (such as Cube Call Recorder or ACR), which intercept the audio stream and can create a delay that causes you to hear an echo of your voice.

How to check:

• 📱 Go to Settings. → Annexes → Application management.
• 🔍 Enter "recorder" or "recorder" in the search".
• 🚫 Disable or remove all applications related to recording calls.
• 🔄 Restart your phone and check the connection.

MIUI has a built-in call recording feature (in some regions it is legally disabled) to deactivate it:

1. Open the Phone app.
2. Press three points (⋮) → Settings → Recording of conversations.
3. Turn off the automatic recording option.

Yes, regularly |Yes, but rarely |No, I don't use |Tryed but deleted-->

Note: Some firmware (e.g. MIUI Global for India) have mandatory call recording to comply with local laws, in which case the echo may be due to the system service com.android.incallui, which cannot be disabled without root rights.

4. Failure of speaker or acoustic system

If the echo is only heard in the speaker (not in headphones), the problem may lie in:

• 🔊 Dynamic damage (membrane rupture, contact detachment).
• 🎛️ Faulty audio amplifier (Audio chip) IC).
• 🔌 Poor contact of the plume (relevant after repair or fall).

Diagnosis:

To check the dynamics:

1. Turn on the music and listen to the sound. Distortion or wheezing is a sign of malfunction.
2. Call your phone from another device and switch to speakerphone, and if the echo is amplified, the problem is external speaker.

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In Xiaomi models with stereo speakers (such as the POCO F5 or Xiaomi 13T), echoes can occur due to mismatch between the two speakers. Try turning off the stereo sound in the engineering menu (#3644633##).

5. Software failures: firmware, updates, conflicts

The echo may appear after:

• 📲 Updates MIUI (Especially if the beta version or developer version).
• 🔄 Resetting settings to factory.
• 🤖 Obtaining root rights or installing custom recavery.

How to eliminate:

1. Reset network settings: Settings → SIM-maps and mobile networks → Resetting network settings
2. Clear the cache of the Phone app: Settings → Applications → App management → Phone → Storage → Clear the cache
3. Reverse to stable firmware if the echo appears after the update. To do this: Download the full firmware package from the official Xiaomi website. Go to Settings → The phone. → Updating the system → Three points (⋮) → Select a Service Package.

MIUI 14.0.3–14.0.6 has detected an error in VoLTE audio processing that results in echoes. If your firmware version falls within this range, upgrade to the last stable build or roll back to MIUI 13.

Download the correct version MIUI for your model|Make a backup copy of the data|Charge your phone at least 50 times%|Disable the loader lock (if required)|Use the original USB-cable-->

6.Problems on the side of the operator or interlocutor

It's not always your phone's fault.

• 📡 On the operator side (switch problems, poor coverage).
• 📞 The other person (he uses a speakerphone or a faulty phone).
• 🌍 International calls (delays due to traffic routing).

How to check:

1. Call another number (for example, a landline phone), if there is no echo, the first person has a problem.
2. Try using another one. SIM-If the echo goes missing, the network is to blame.
3. Turn off VoLTE and VoWiFi in the settings SIM-cards – sometimes echoes are caused by unstable voice transmission IP.

If the problem is on the operator's side:

• 📞 Call support and report the malfunction (check if work is underway at the station).
• 🔄 Try to manually select a network 2G/3G instead 4G (In some regions, voice communication is more stable in older networks).
• 📡 Use WhatsApp (WhatsApp, Telegram) for calls – they often work better than mobile.

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If the echo only appears when you call a particular number, ask the person to turn off the speakerphone or use headphones, and 60 percent of the time, the problem is solved on their side.

7. Hardware malfunctions: what to do if nothing helps

If all the software methods have been tried and the echoes have remained, it's probably the hardware that's to blame.

• 🔌 Detachment of contacts on the board (after falling or overheating).
• 🔋 Failure of the audio chip (e.g. Qualcomm) WCD9385 in smartphones on Snapdragon).
• 📶 Problems with antenna module (poor signal reception leads to delays in sound).

Signs of hardware malfunction:

⚠️ Warning: If the echo is accompanied by spontaneous reboots, overheating or no sound in the headphones, do not try to repair the phone yourself.This can be a symptom of damage to the motherboard, and unprofessional intervention will only aggravate the problem.

Diagnosis at a service center usually includes:

1. Checking the power chains of the audio chip with a multimeter.
2. Microphone testing and oscilloscope dynamics.
3. Diagnostics of the antenna tract (if the echo is associated with a bad signal).

Cost of repair:

For Xiaomi models with official warranty, repairs will be free, unless the fault is caused by mechanical damage or moisture.

• Make a backup copy of the data (may need a reset).
• Check if you have an authorized Xiaomi service center in your city (list on mi.com).
• If the phone is guaranteed, do not open it yourself!

FAQ: Frequent questions about the echo in Xiaomi phone