Echo in a phone when talking on Android: causes and solutions

Echoes during phone calls are one of the most annoying problems faced by owners of smartphones on Android. Your interlocutor hears his own voice with a delay and sometimes distorted - this interferes with communication, forces you to call back and spoils the impression of even an expensive device. The reasons for the appearance of an echo can be either software (incorrect microphone settings, firmware errors) or hardware (damage to the speaker or connector). In this article, we will look at all possible ways to fix the problem - from basic settings to in-depth diagnostics.

Many users mistakenly think that echo is exclusively a problem with cheap smartphones. In practice, owners of flagships Samsung Galaxy S23, Google Pixel 7 and even Xiaomi 13 Proface it. It’s not the price of the device, but a combination of factors: from the quality of the operator’s connection to application conflicts. We have collected proven methods that will help you get rid of echo once and for all - without contacting a service center.

It is important to understand: if the echo appears only when making calls via messengers (WhatsApp, Telegram, Viber), the problem may lie in the settings of a specific application. If an echo is heard during normal calls via a SIM card, the system parameters or hardware are to blame. Let's start with the simplest solutions and gradually move on to complex ones.

1. Checking the basic sound and microphone settings

Before digging deep into the system files, make sure that the problem does not lie in the basic settings. Often an echo occurs due to the switched on boost the microphone or incorrectly selected sound source. Here's what you need to do first:

Open the application Phone and go to Settings → Sound and vibration (the path may differ depending on the shell). Check the following parameters:

• 🔇 Disable the gain voice - this function is available in some firmware (for example, in MIUI from Xiaomi) and often causes an echo.
• 🎤 Select the correct microphone —if you have a smartphone with multiple microphones (for example, Samsung Galaxy S22 Ultra), make sure that the main one is active and not the additional one.
• 🔄 Reset sound settings —in the menu System → Reset settings → Reset sound settings.

It is also worth checking if the mode Speakerphone is activated by default. Sometimes it turns on due to a glitch or after a firmware update. To do this, during a call, tap the speaker icon on the screen - if it is highlighted, it means the mode is active. Turn it off and check if the echo is gone.

2. Diagnosing hardware problems

If the echo does not disappear after resetting the settings, perhaps the problem lies in hardware. Most often the culprits are:

• 📱 Damaged 3.5 mm connector (if you connect headphones) - oxidation of contacts or mechanical damage can cause a short circuit due to which the sound is duplicated.
• 🔊 Faulty speaker or microphone - especially important after falls or moisture.
• 🔌 Poor battery contact —sounds strange, but on some models (for example, Redmi Note 10) this may affect the operation of the audio system.

To check the hardware, follow these steps:

1. Connect headphones (preferably original) and make a test call. If the echo disappears, the problem is in the smartphone dynamics.
2. Try to call through another messenger (for example, if the echo was in WhatsApp, use a standard call). If the problem remains, the firmware or hardware is to blame.
3. Inspect the headphone jack for dirt or damage. If necessary, carefully clean it with a toothpick (not with metal objects!).

If you suspect that the problem is with the microphone, you can check its operation using the built-in application Dictaphone or third-party utilities like Microphone Test (available on Google Play). Record a few seconds of speech and listen to the recording - if the sound is distorted or duplicated, the microphone is faulty.

3. Configuring communication and network settings

Echoes during calls may occur due to poor connection quality or incorrect network settings. This is especially true for owners of smartphones with support VoLTE (voice communication via 4G). Here's what you can do:

First of all, check whether your VoLTEis turned on. To do this, go to:

Settings → SIM cards and mobile networks → [Your SIM] → Enable VoLTE

If the option is active, try disabling it and making a test call. Sometimes echo appears due to a conflict between VoLTE and operator settings.

Also worth checking:

• 📶 Network signal strength - if it is weak (1-2 bars), the phone may automatically boost the microphone, which leads to echo. Try moving to another location with better coverage.
• 🔄 Network mode —if you have it on 3G only, switch to 4G/3G/2G (auto).
• 📱 APN settings — sometimes operators update access settings, and old settings may cause failures. Reset the APN to standard (in the mobile network menu there is an option Reset APN settings).

How to check the connection quality?

Hold *#0011# on the phone keyboard (works on Samsung). It will open service menu with information about the signal level, network type and other parameters. If the value Rx Power is below -100 dBm, the signal is too weak.

If you use two SIM cards, try to temporarily disable one of them. Sometimes a conflict between operators leads to sound distortion. To do this, go to Settings → SIM cards and mobile networks and deactivate the second one. SIM.

4. Firmware update and reset settings

Errors in the firmware are one of the most common causes of echo Manufacturers regularly release updates that fix bugs with sound. To check the relevance of yours. firmware:

1. Go to Settings → System → System update.
2. Click Check for updates and wait until the search is completed.
3. If an update is available, install it. After updating the firmware, the echo disappears in 60% of cases (according to service centers).

If there are no updates or they did not help, the next step is reset to factory settings. This is a radical method, but it often solves the problem. Before resetting, be sure to back up your data:

• 📱 Save contacts to your Google account (Contacts → Settings → Import/Export).
• 📷 Transfer photos and videos to your computer or to the cloud.
• 🔑 Write down application passwords (use Google Password Manager or 1Password).

To reset, go to:

Settings → System → Reset settings → Delete everything data

After rebooting, the phone will be like new. Immediately after setting up, check the call - if the echo is gone, the problem was in the software.

5. Using third-party applications for echo cancellation

If none of the previous methods fail. helped, you can try specialized applications that suppress echoes programmatically. They work as a filter, removing duplicate sound in real time. Here are the top 3 proven utilities:

Application	Features	Link	Rating
Echo Cancel	A simple application with minimal settings. Works in the background.	Google Play	4.3
Acoustic Echo Canceller	Advanced echo cancellation algorithms, supports VoIP calls.	Google Play	4.5
SoundAbout	Allows you to redirect sound between microphones and speakers, eliminating echo.	Google Play	4.1

Before installation, make sure that The application is compatible with your smartphone model. Some utilities require root access, but most work without them. After installation:

1. Launch the application and provide access to the microphone.
2. Enable the option Echo Cancellation or Noise Suppression.
3. Make a test call to evaluate the result.

Please note: such applications may slightly increase audio latency (by 50-100 ms), but this is not noticeable to most users. If call quality deteriorates after installation, uninstall the app and try another solution.

6. Hardware repair and service call

If all software methods have been tried, but the echo remains, the problem is almost certainly in hardware. Here are the most common malfunctions and their symptoms:

• 🔧 Damaged microphone —the echo is constantly heard, even in a quiet room. The sound may be muffled or distorted.
• 🔌 Oxidation of contacts on the motherboard - echo appears periodically, especially after temperature changes (for example, if the phone was brought from cold to warm).
• 📶 Faulty radio module - echo accompanied by a poor network signal or frequent communication interruptions.

Independent repair is only possible if you have experience working with electronics. For example, you can replace the microphone on Samsung Galaxy A52 yourself by purchasing an original spare part (cost is about 500-800 rubles). To do this you will need:

• A plastic mediator for opening the case.
• A screwdriver T3 or T4 (depending on the model).
• A hair dryer to soften the glue (if the case glued).

If you are not confident in your abilities, it is better to contact the service center. The average cost of diagnostics is 500-1000 rubles, microphone repair will cost 1000-2500 rubles, depending on the model. Before visiting the service:

⚠️ Attention: Check with the operator whether the warranty is still valid if you open the case yourself. On some models (for example Google Pixel), the warranty is void even if the battery is replaced.

7. Prevention: how to avoid echoes in the future

To prevent echoes from appearing again, follow these recommendations:

• 📵 Avoid calls in places with poor signal — elevators, basements, remote areas. If the signal is weak, use instant messengers that support Wi-Fi calls.
• 🔄 Update the firmware regularly —manufacturers often fix sound bugs in new software versions.
• 🛡️ Do not install applications from unknown sources —they may conflict with system services responsible for sound.
• 🧹 Clean the headphone jack —accumulated dust or moisture can cause a short circuit, leading to an echo.

If you often make calls via WhatsApp or Zoom, there are options in the settings of these applications to improve sound quality. For example, in WhatsApp you can enable Noise reduction:

WhatsApp Settings → Storage and data → Call quality → Noise reduction

It is also worth monitoring the battery condition. If it is swollen or discharges quickly, it may affect the performance of the audio system. You can check the battery status using the application AccuBattery or the built-in menu:

##4636## → Battery → Status

If the status is Bad, it's time to replace the battery.

FAQ: Frequently asked questions about echo in the phone

Why is the echo heard only by the interlocutor, and not by me?

This happens due to hardware or software delay during processing sound. Your voice goes to the operator’s (or messenger) server, returns to the interlocutor with a delay and is played through his speaker. If the sound is turned on loud, the microphone picks up your voice again - this is how an echo occurs.

Solution: ask the other person to lower the volume or use headphones.

Can a case cause an echo?

Yes, especially if it tightly covers the speaker or microphone. For example, magnetic covers or thick-walled bumpers can block sound holes. Try removing the case and making a test call.

Also check if dirt has gotten under the case - it can clog the microphone.

The echo appears only during speakerphone calls. What to do?

This is a typical problem when there is a conflict between the front speaker and the microphone. Solutions:

1. Turn off the speakerphone and use the standard mode.
2. Reduce the volume to 70-80% - sometimes the echo appears only at maximum volume.
3. Check the settings Adaptive sound in the menu Sound and vibration and turn them off.

After updating Android, an echo appeared. How to roll back?

Rolling back the firmware is possible, but requires unlocking the bootloader and can lead to data loss. Alternative options:

• Wait for the next update - sound bugs are often fixed in new patches.
• Reset the settings to factory settings (see section 4).
• Contact the manufacturer's support with a description of the problem (attach an error log if you know how to collect it).

If you decide to roll back, look for instructions on the forums 4PDA or XDA-Developers for your model.

Echo is heard only in a specific application (for example, Zoom). How to fix it?

The problem is in the settings of the application itself. To Zoom:

1. Open Settings → Audio.
2. Disable Automatic microphone volume adjustment.
3. Enable Background suppression.
4. Select the correct microphone in the menu Microphone (if there are several of them).

For other applications (Skype, Teams), look for similar options in the sound settings.