Samsung Galaxy S24 No Sound During Calls: 10 Fixes That Actually Work (2026)

If your Samsung Galaxy S24 has no sound during calls — you can hear notification sounds and music just fine, but the earpiece goes silent the moment you pick up the phone — you’re dealing with a known issue on the S24 lineup. The cause is usually one of three things: a Dolby Atmos processing conflict, a software bug introduced by a One UI update, or a failed earpiece speaker that Samsung’s own diagnostics won’t catch. This guide walks through every fix in order from most likely to most serious.

Why the Galaxy S24 Loses Call Audio (S24-Specific Causes)

Before jumping to fixes, it helps to know what you’re actually dealing with. The S24’s no-sound-during-calls issue is different from the same symptom on older Galaxy phones for a few reasons:

One UI update regressions — Multiple firmware updates have introduced audio bugs specific to the S24 line. The January 2025 update broke LE Audio codec support, silencing calls for users with Bluetooth hearing aids (Oticon, Phonak) and certain Sony earbuds. One UI 7 introduced a bottom microphone bug on the S24 Ultra that made callers unable to hear you unless you switched to speakerphone. One UI 8 caused garbled, distorted earpiece audio on S24 Ultra units. Samsung acknowledged the LE Audio bug publicly; the others spread across community forums without official acknowledgment.

Dolby Atmos conflict — The S24 runs Dolby Atmos processing by default. This audio engine occasionally glitches and routes or muffles call audio through the earpiece. Disabling it is a two-tap fix that solves this for a significant number of users.

Proximity sensor interference — A screen protector with no cutout near the earpiece can block the proximity sensor, causing the S24 to think it’s in your pocket during a call and muting the earpiece. If you recently put on a new screen protector and sound disappeared, this is likely your issue.

Earpiece hardware failure — The earpiece speaker on the S24 sits beneath the display frame in the top speaker assembly. Unlike the loudspeaker, it doesn’t get tested by the Samsung Members diagnostics tool by default. Users with a fully failed earpiece often see their Samsung Members test come back “Pass” — because the test uses the loudspeaker. iFixit has published dedicated earpiece replacement guides for all three S24 models, indicating this is a real-world failure point.

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Fix 1: Turn Off Dolby Atmos (Fixes Most Cases)

This is the fix that works for the largest number of S24 users. Dolby Atmos processing can interfere with earpiece audio routing during calls.

1. Go to Settings → Sounds and vibration → Sound quality and effects
2. Tap Dolby Atmos
3. Toggle it OFF
4. Make a test call

If call audio comes back immediately, Dolby Atmos was the culprit. You can leave it off permanently — you’ll still get full stereo audio for music and video — or re-enable it between calls. Some users find re-enabling it after a restart causes no further problems.

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Fix 2: Check the Mic Mode Setting

Samsung’s Voice Focus feature (introduced in One UI 6.1) processes your microphone input using AI noise reduction. When this is misconfigured, it can cause issues where callers can’t hear you and you can’t hear them properly.

During an active call, swipe down twice to expand the Quick Panel and tap Mic mode. Cycle through the options:
– Standard: normal microphone input, no AI processing
– Voice Focus: AI emphasizes your voice, suppresses background noise
– Full Spectrum: captures full environment

Set it to Standard and test whether the other person can hear you. Starting with One UI 6.1.1, there’s also a Voice Focus toggle directly on the in-call screen — tap it to switch between modes without touching the notification shade.

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Fix 3: Disconnect Bluetooth Devices

If a Bluetooth device was recently connected to your S24, call audio may be routing there silently — leaving your earpiece dead with no visible indication.

1. Swipe down on the notification shade and toggle Bluetooth OFF
2. Make a test call

If sound returns, Bluetooth was hijacking the audio route. You can re-enable Bluetooth and manually manage audio routing during calls using the in-call audio button (the phone icon with speaker wave lines). To prevent future auto-routing, go to the Bluetooth settings for the specific device and disable “Call audio” under the device’s profile options.

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Fix 4: Check the Proximity Sensor

The proximity sensor sits at the top of the S24, just above the earpiece. During a call, it detects when your face is near the phone and turns off the screen to prevent accidental taps — but it also mutes the earpiece if it thinks the phone is obstructed.

If you have a screen protector installed: remove it temporarily and make a test call. Many screen protectors block the proximity sensor zone and cause persistent call audio silence.

To verify the sensor is working:
– Open the Phone dialer and type *#0#*
– This opens Samsung’s hardware diagnostic interface
– Tap Proximity — cover the sensor with your finger; the screen should respond with “Near” / “Far” indicators

If the proximity sensor is stuck reading “Near” even in open air, or doesn’t respond, clean the top of the phone gently with a dry cloth or consider a service appointment.

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Fix 5: Enable Extra Volume in Accessibility Settings

The Galaxy S24 has a hidden volume amplifier for calls in Accessibility settings. It’s separate from the main volume slider and can push earpiece audio beyond the normal maximum.

1. Go to Settings → Accessibility → Hearing enhancements
2. Tap Extra volume and toggle it ON
3. Also verify Mute all sounds is toggled OFF — this is a different setting that silences everything including calls

Also check the audio balance slider here. If it’s shifted far to one side, call audio may be near-silent in one ear.

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Fix 6: Run the Earpiece Hardware Test

The Samsung Members diagnostics app tests the loudspeaker, not the earpiece — so if your earpiece has failed, the test will pass and you’ll be none the wiser. Use Samsung’s hidden hardware menu instead to test the earpiece in isolation.

1. Open the Phone dialer
2. Type *#0#* and tap Call (or it opens automatically)
3. Tap Receiver
4. A test tone will play through the earpiece only

If you hear nothing, hear distortion, or hear the tone playing from the loudspeaker instead, the earpiece hardware is faulty. Note your result for the warranty claim conversation.

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Fix 7: Check for and Apply Pending Software Updates

Multiple S24 audio bugs have been tied to specific firmware versions. Before attempting deeper resets, make sure you’re on the latest available update — Samsung has patched some of these issues in subsequent releases.

1. Go to Settings → Software update → Download and install
2. If an update is available, install it and reboot
3. After updating, test call audio before continuing with other fixes

If your issue started after an update and no newer patch is available yet, you can try checking Samsung’s community forums for whether others are reporting the same regression and whether a workaround exists.

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Fix 8: Change the Network Mode

This fix sounds unrelated but has resolved persistent no-audio call issues for multiple Samsung Community users. The cause is a codec negotiation bug between the S24 and certain carriers on 5G networks.

1. Go to Settings → Connections → Mobile networks → Network mode
2. Change from 5G/LTE/3G/2G (auto connect) to LTE/3G/2G
3. Make a test call

If call audio returns on LTE but was absent on 5G, the issue is a carrier-side 5G audio codec compatibility problem. You can leave the phone on LTE until Samsung or your carrier releases a fix, or report the issue to your carrier directly.

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Fix 9: Reset Network Settings and App Preferences

These two resets clear configuration conflicts without erasing your personal data.

Reset Network Settings (clears all Wi-Fi passwords, Bluetooth pairings, VPN settings):
– Go to Settings → General management → Reset → Reset network settings
– Tap Reset settings and confirm

Reset App Preferences (resets default app choices, permissions, disabled apps — your data is untouched):
– Go to Settings → Apps (or Application Manager)
– Tap the three-dot menu → Reset app preferences

After either reset, reboot your phone and test call audio. Network settings reset in particular resolves audio routing conflicts caused by remembered Bluetooth or VPN configurations.

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Fix 10: Safe Mode Test and Factory Reset

Safe Mode disables all third-party apps temporarily. If call audio works in safe mode, an installed app is interfering with audio routing.

To enter safe mode:
1. Hold the power button until the power menu appears
2. Press and hold Power off until the “Safe mode” prompt appears
3. Tap Safe mode to confirm
4. Test call audio — all third-party apps will be disabled
5. To exit: hold power button → Restart

If call audio works in safe mode, uninstall recently added apps one at a time to find the culprit. Call recording apps, VoIP apps, and accessibility apps are the most frequent offenders.

Factory reset should be your final option. Back up your data first (Settings → Accounts and backup → Back up data), then:
– Go to Settings → General management → Reset → Factory data reset
– Confirm and follow the prompts

Note: Multiple users have reported that a factory reset did not fix the One UI 7 bottom microphone bug. If a reset doesn’t resolve your issue, the cause is more likely a firmware-level bug or hardware failure.

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When It’s a Hardware Problem: Warranty and Repair Options

If you’ve worked through the software fixes and the *#0#* earpiece test confirms no audio, the earpiece speaker has failed and needs physical repair.

Check your warranty coverage first:

Location	Warranty Duration	Coverage
USA	1 year from purchase	Manufacturing defects under normal use
EU	2 years	EU statutory minimum
UK	2 years	UK Consumer Rights Act

Under warranty, Samsung will repair or replace a defective earpiece at no cost. The key is documenting that the failure occurred under normal use — not from a drop, liquid exposure, or physical damage.

Contact Samsung Support:
– Phone (US): 1-800-SAMSUNG (1-800-726-7864), Mon–Fri 8 AM–Midnight EST, Sat–Sun 9 AM–11 PM EST
– Online support: samsung.com/us/support
– Repair / warranty claim: samsung.com/us/support/service
– Samsung Care+ claims (if you have extended/accidental coverage): Servify at 1-833-690-0918, available 24/7

When you contact Samsung, mention that:
1. You’ve tested the earpiece with the *#0#* Receiver test and it produces no audio
2. The Samsung Members diagnostics test passed — but that tests the loudspeaker, not the earpiece
3. Speakerphone works fine (confirming the issue is isolated to the earpiece)

This framing skips the standard front-line troubleshooting loop and gets you directly to a service appointment.

Out-of-warranty repair: Samsung Authorized Service Centers charge approximately $80–$150 for an earpiece replacement depending on S24 model (standard, Plus, or Ultra). iFixit rates it a difficulty 5/10 repair for DIY — it requires a heat gun, opening picks, and careful handling of the display ribbon cables. The earpiece assembly itself costs $15–$25 on iFixit’s marketplace.

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Summary: Which Fix to Try First

Your Situation	Start With
Sound works on speakerphone but not earpiece	Fix 6 (*#0#* earpiece test), then Fix 1 (Dolby Atmos)
Callers can’t hear you, you can’t hear them	Fix 2 (Mic Mode), Fix 9 (Reset network)
Issue started after a One UI update	Fix 7 (software update), Fix 8 (network mode)
Issue started after putting on a screen protector	Fix 4 (proximity sensor)
Bluetooth device was recently connected	Fix 3 (disconnect Bluetooth)
All of the above tried, still no fix	Fix 10 (safe mode / factory reset), then warranty claim

If the earpiece test at *#0#* produces no sound after you’ve tried the software fixes, proceed directly to Samsung support for a warranty repair. As of 2026, Samsung’s US warranty line is 1-800-726-7864.

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