No sound when making calls on Android: why this happens and how to fix it yourself

You dial a number, wait for an answer - and there is silence in the speaker. Or you can only hear a squeak or crackle, and the interlocutor’s voice disappears after 2 seconds. Is the situation familiar? Problems with sound during calls on Android smartphones they occur more often than it seems. The reasons range from an accidentally pressed button to serious hardware failures. But in 80% of cases, you can fix the problem yourself - without contacting a service center.

In this article we will look at all possible scenarios: from software failures to mechanical damage. You'll learn how to diagnose the problem based on symptoms, which settings to check first, and when it's really time to take your phone in for repair. And also - a list of smartphone models that have a systemic problem with sound during calls (and how to get around it).

Do not rush to panic: even if the sound disappeared after a crash or firmware update, the chances of recovery without data loss remain high. Let's start with the simplest.

1. Basic checks: what to do first

Before you dig deeper, rule out obvious causes. These steps will take no more than a minute, but often solve the problem:

• 🔊 Make sure that the sound is not physically muted. Many smartphones (for example Samsung Galaxy or Xiaomi Redmi) have a separate volume button for calls. Press it up all the way.
• 📵 Check the "Do not disturb" mode. It can block the sound of calls. Go to Settings → Sound → Do not disturb and disable the function.
• 🔋 Restart the phone. It's trivial, but it works: temporary software glitches are often fixed by a simple reboot. Press the power button for 10 seconds.
• 🎧 Disconnect the headphones or Bluetooth devices. Sometimes the system "forgets" to switch back to the speaker. Connect and disconnect the headphones again.

If after these manipulations the sound does not appear, move on. Pay attention to the behavior of the phone:

• Can you hear sound in other applications (YouTube, music players)?
• Does the speaker work on speakerphone?
• Do any error notifications appear?

2. Sound and call settings: what could have gone wrong

Android offers dozens of parameters that affect the sound during calls. Let's consider the key ones:

2.1. Call volume and audio routing

Go to Settings → Sound → Volume. There are separate sliders for:

• 📞 Calls (adjusts the volume of an incoming call)
• 🎤 Media (affects the sound during a call)
• 🔔 Notifications (not directly related, but sometimes gets confused together)

Critical moment: on some firmware (for example, MIUI or ColorOS) there is an option "Separate sound control". If it is active, the call volume can be reset regardless of other settings.

2.2. Routing sound to speakers

Android allows you to choose where to output sound during a call:

• 📱 Phone speaker (standard mode)
• 🔊 Loud communication (turned on by button during a call)
• 🎧 Bluetooth device (if connected)

To reset routing settings:

1. Open Settings → Accessibility → Hearing.
2. Find the item "Audio routing" or "Mono audio".
3. Disable all options and restart the phone.

2.3. Resetting call settings

If the previous steps did not help, reset your phone call settings to factory settings:

1. Go to Settings → Applications → Phone (or "Calls").
2. Click "Storage" → "Clear data".
3. Confirm the action. Attention: this will delete the call history!

⚠️ Attention: On some models (Huawei, Honor), resetting your phone may result in the loss of saved SIM contacts. First export them to your Google account.

3. Software failures: when the software is to blame

If the sound disappears after updating the system, installing an application, or “by itself,” most likely the problem is in the software. Let's look at typical scenarios.

3.1. Resetting the system partition cache

The cache partition stores temporary OS data. Cleaning it does not delete personal files, but often solves problems with sound:

1. Turn off the phone.
2. Hold down the combination of buttons to enter Recovery Mode (usually Power + Volume up).
3. In the recovery menu, select Wipe cache partition (use the volume buttons to navigate, the power button to select).
4. After cleaning, reboot the device (Reboot system now).

For different brands, the button combinations are different:

Brand	Combination for Recovery	Note
Samsung	Power + Volume Up + Bixby	On new models without the Bixby button - only Power + Volume Up
Xiaomi/Redmi/Poco	Power + Volume up	Hold for 10-15 seconds until vibration
Huawei/Honor	Power + Volume up	On some models you need to hold for 20+ seconds
Google Pixel	Power + Volume down	In the recovery menu, use the sensor to select

3.2. Application conflict

Some apps (especially those that work with sound or microphone) can block the sound of calls. To identify the culprit:

1. Boot the phone into safe mode (hold the power button → "Safe Mode").
2. Try to make a call. If sound appears, the problem is in a third-party application.
3. Uninstall recently installed apps one by one, checking the sound after each uninstallation.

Top 5 applications that often cause problems with sound:

• 🎵 Call recording applications (Cube Call Recorder, ACR)
• 🎧 Equalizers and sound modifiers (ViPER4Android, Equalizer FX)
• 🔒 VPN clients with microphone blocking function
• 🤖 Automation applications (Tasker, MacroDroid)
• 🎮 Game emulators (may occupy audio channels)

3.3. Reset to factory settings

A last resort if other methods did not work. Important: save the data before resetting!

1. Go to Settings → System → Reset settings.
2. Select "Reset phone settings".
3. Confirm the action (you may need to enter a PIN code).

⚠️ Attention: On phones MIUI 12+ and One UI 4+ after the reset, you may need to re-link your Mi or Samsung account. Without this, some functions (including calls) will not work.

What to do if after the reset there is still no sound?

If the reset did not help, the problem is most likely hardware. This could be:

- Damage to the speaker cable (often after a fall)

- Oxidation of contacts on the motherboard (after moisture)

- Malfunction of the sound chip (occurs on Qualcomm Snapdragon 8xx series)

In these cases, diagnostics are required at a service center.

4. Hardware faults: when repairs are necessary

If software methods do not return the sound, it’s time to consider physical breakdowns:

• 🔇 Complete lack of sound (even system signals)
• 🔊 Distorted sound (crackling, wheezing, interruptions)
• 📱 Sound works only on speakerphone
• 💧 Traces of moisture (condensation under the screen, oxidized connectors)

4.1. Diagnostics of the speaker

Test the speaker:

1. Dial the code ##3424## or #0# (on Samsung).
2. In the testing menu, select "Speaker" or "Ringtone".
3. If there is no sound, the speaker is faulty.

Codes for different brands:

Brand	Speaker test code	Alternative code
Samsung	#0#	##3424##
Xiaomi/Redmi	##4636##	##6484## (microphone test)
Huawei/Honor	##2846579##	Project Menu → Audio
Google Pixel	##3424##	There is no alternative

4.2. Checking the microphone

If I can't hear you, and not you are the interlocutor, the problem is in the microphone:

1. Open the application "Dictaphone" and record a few seconds.
2. Play the recording If there is no sound or it is distorted, the microphone is faulty.
3. Try using speakerphone —if you can be heard in this mode, the problem is in the main microphone.

Frequent causes of microphone failure:

• 💦 Moisture getting into the bottom connector (where the microphone is located)
• 🧲 Strong magnetic influence (for example, from wireless charging)
• 🔨 Mechanical damage after a fall

4.3. Problems after falling or getting wet

If the phone has been dropped or in contact with water, act quickly:

1. Turn off the device and remove the SIM card.
2. Place the phone in dry place with good ventilation (do not use a hair dryer!).
3. Wait at least 24 hours before turning on.
4. If after drying the sound is not restored, do not turn on the phone again. Oxidation of contacts is aggravated when power is applied.

⚠️ Attention: On phones with non-removable battery (Samsung Galaxy S22, Google Pixel 7), self-disassembly will lead to loss of warranty. Contact the service center within 48 hours after the incident - the chances of free repairs under warranty (if it is valid) are higher.

5. Problems with the firmware and modem

Sometimes the sound during calls disappears due to failures in radio module (responsible for communication) or incorrect firmware. This is relevant after:

• 🔄 Android updates "over the air"
• 🛠️ Manual flashing via Odine or Fastboot
• 📶 Changing operator or SIM card

5.1. Resetting the modem settings

On some phones (for example, Samsung or LG) you can reset the modem settings:

1. Dial the code ##4636##.
2. Go to the menu "Phone information".
3. Press "Select SIM" (if there are several slots).
4. Find the button at the bottom of the screen "Reset Radio" or "Reset RIL".

Important: After resetting the modem, the phone will reboot and the mobile network (APN) settings may be reset. They will have to be configured again.

5.2. Flashing the radio module

If the reset does not help, try updating the radio module separately from the system. To do this:

1. Download official firmware for your model from the manufacturer's website.
2. Unzip the file and find the folder with the modem (usually has an extension .mdm or .mbn).
3. Flash the modem via Odine (for Samsung) or Fastboot (for other brands).

Command for flashing via Fastboot:

fastboot flash modem NON-HLOS.bin
fastboot reboot

⚠️ Attention: Do not flash a modem from a different phone model! This will lead to hard brick (complete failure of the device). Always check the compatibility of the files.

5.3. data-i="268">Technologies

Technologies VoLTE (voice over 4G) and VoWiFi (Wi-Fi calls) sometimes conflict with sound. To check:

1. Go to Settings → Mobile network.
2. Disable options "VoLTE calls" and "Wi-Fi calling".
3. Restart the phone and check the sound.

If sound appears —the problem is in the operator settings. Contact your provider's support and request reactivation of VoLTE/VoWiFi services.

6. Specific problems for popular models

Some smartphones have system bugsrelated to sound during calls. Here are the most common ones. cases:

6.1. Samsung Galaxy (One UI)

On devices with One UI 4.0+ (for example, Galaxy S21, Galaxy A52) there is often a bug when the sound disappears after:

• 🔄 Updates via Samsung Smart Switch
• 📱 Connections to DeX (desktop mode)
• 🎧 Uses Dolby Atmos during a call

Solution for Samsung:

1. Disable Dolby Atmos in Settings → Sound → Sound quality.
2. Clear cache applications "Phone".
3. Update Samsung Phone Services via Galaxy Store.

6.2. Xiaomi/Redmi/Poco (MIUI)

On MIUI 12-14 the sound may disappear due to:

• 🔕 Active mode "Call Privacy"
• 📱 Conflict with MIUI Optimization
• 🔄 Failure after updating via MIUI Downloader

Solution for Xiaomi:

1. Disable Settings → Special. features → Call privacy.
2. In the engineering menu (##4636##) select "Audio → Normal Mode".
3. Install EU firmware (if you are using the global version of MIUI).

6.3. Google Pixel

On Pixel 4a/5/6/7 there is a known bug with sound distortion when making calls via VoLTE. The reason is in the drivers Qualcomm.

Solution for Pixel:

1. Disable VoLTE in Settings → SIM cards → Advanced.
2. Install the beta version Google Phone from Play Market.
3. Reset network settings: Settings → System → Reset → Reset Wi-Fi, mobile network and Bluetooth.

6.4. Huawei/Honor (EMUI/Magic UI)

On devices s Kirin 9xx (for example, Huawei P30, Mate 40) the sound may disappear after:

• 🔄 Updates via HiSuite
• 📱 Use Huawei Mobile Services (HMS)
• 🔋 Battery discharge below 15%

Solution for Huawei:

1. Update Huawei Phone Manager via AppGallery.
2. V engineering menu (##2846579##) select Project Menu → Background Settings → Audio Settings → Restore Default.
3. Disable "Energy saving for calls" in Settings → Battery.

7. When to contact a service center

If none of the methods helped, most likely the problem is hardware. Signs that repair is needed:

• 🔇 Complete absence of sound in all modes (including speakerphone)
• 💥 Traces of physical damage (cracks, dents, corrosion)
• 🔥 Overheating of the phone during a call
• 📉 Decrease in sound quality after falling or getting wet

7.1. How to choose a service center

Not all workshops are equally useful. What to pay attention to:

• 🛠️ Official status: Give preference to the brand's authorized service centers.
• 💰 Price list: Average cost of speaker repair - 1 500–4 000 ₽, microphone - 1 000–3 000 ₽.
• ⏱️ Terms: Diagnostics should take no more than 1 day, repairs - up to 3 days.
• 📄 Warranty: Minimum warranty for repairs - 3 months.

7.2. Repair cost by brand

Brand	Speaker replacement (₽)	Microphone replacement (₽)	Diagnostics (₽)
Samsung	2 500–4 000	1 500–2 500	Free (if repair)
Xiaomi/Redmi	1 500–3 000	1 000–2 000	300–500
Apple (iPhone)	3 500–6 000	2 500–4 000	1 000
Google Pixel	3 000–4 500	2 000–3 000	Free
Huawei/Honor	2 000–3 500	1 200–2 200	400–600

7.3. What to do if the phone is under warranty

If the device is under warranty Do not disassemble it yourself! This will void the warranty. Instead:

1. Contact the manufacturer's support (contacts are in the documentation).
2. Describe the problem in as much detail as possible (when it appeared, under what circumstances).
3. If you need to ship the phone, pack it with shock-absorbing material (bubble wrap).
4. Keep the shipping receipt - you will need it to track the package.

⚠️ Attention: The warranty does not cover damage caused by:

- Moisture (if there is no official protection IP68)

- Self-repair or disassembly

- Using non-original accessories (chargers, cases)

8. Prevention: how to avoid problems with sound in the future

To ensure that the sound on calls does not disappear again, follow these recommendations:

• 🔄 Update the software regularly. Manufacturers often fix sound bugs in new firmware versions.
• 🛡️ Use protective cases. speakerThis will prevent dust and moisture from entering.
• 🔋 Do not discharge the phone to 0%. A sudden shutdown can damage the audio chip.
• 🎧 Avoid cheap Bluetooth headphones. They may conflict with the system.
• 🚫 Do not install modified firmware (for example, LineageOS), if you are not sure of their stability.

Useful applications for sound monitoring:

• 🔊 Phone Doctor Plus - tests the speaker and microphone.
• 📊 CPU-Z —shows information about the sound chip.
• 🔧 DevCheck —diagnoses hardware components.