Your phone speaker works fine for music and normal calls, but on WhatsApp you hear nothing, or the other person cannot hear you. That split is actually good news: if the speaker works anywhere, the hardware is probably fine, and the problem is almost always in WhatsApp’s audio routing, its permissions, or a device still connected over Bluetooth. Work through the checks below in order, and test after each one.

First, pin down exactly what is broken, because WhatsApp has three different audio paths and they fail differently. Voice notes and voice messages play through the earpiece when you hold the phone to your ear, and through the loudspeaker when you tap the speaker icon. WhatsApp voice and video calls use the earpiece by default, with a speaker button to switch to loudspeaker. If voice notes are silent but calls work, or calls are silent but voice notes play, you have a routing problem, not a dead speaker.

Fix 1: check the obvious audio routing

• Tap the speaker icon on voice notes. If a voice note plays quietly through the earpiece, tap the speaker icon to switch it to the loudspeaker. The proximity sensor switches back to the earpiece whenever the phone is near your face or your hand covers the top of the screen, which is why voice notes sometimes go quiet mid-message.
• Turn Bluetooth off completely. This is the single most common fix. If earbuds, a watch or a car stereo is connected, WhatsApp may be sending call audio there while you listen for it on the phone speaker. Turn Bluetooth off, not just disconnect, and test a call again.
• Check the in-call speaker button. On a WhatsApp call, tap the speaker icon so it is highlighted. If it is off, the call plays through the earpiece, which is easy to mistake for a broken loudspeaker in a noisy room.
• Take the case off and clean the grille. A case lip over the earpiece or a lint-blocked grille makes WhatsApp calls sound faint while music, which uses the louder bottom speaker, sounds fine.

Fix 2: check WhatsApp’s permissions

WhatsApp needs microphone permission to send your voice and, on some Android phones, nearby-device and phone permissions to route call audio correctly. On Android, go to Settings, Apps, WhatsApp, Permissions, and make sure Microphone is allowed while using the app. On iPhone, go to Settings, WhatsApp, and make sure Microphone is on. If permission was set to “Ask every time” or denied during an update, calls can connect with no audio in either direction, which looks exactly like a speaker fault.

While you are there, check that WhatsApp is not muted or restricted by battery optimisation. Some Android phones aggressively pause background apps, which can cut call audio after a few seconds. Exempting WhatsApp from battery optimisation is a legitimate fix, not a workaround, for calls that start fine and then go silent.

Fix 3: clear the cache, update, and restart cleanly

• Restart the phone. A stuck audio session from another app can hold the speaker routing hostage. A full restart clears it.
• Clear WhatsApp’s cache (Android only). Go to Settings, Apps, WhatsApp, Storage, Clear cache. This does not delete chats. Do not tap Clear data, which signs you out.
• Update WhatsApp and your phone software. Audio routing bugs are regularly fixed in updates, and a WhatsApp version that predates a major Android or iOS update is a classic cause of silent calls. Update both, then restart once more.
• Test with a different contact and a different network. If one contact’s calls are silent but others work, the problem may be on their side. If calls fail on Wi-Fi but work on mobile data, or the reverse, the network, not the speaker, is dropping the audio.

Fix 4: rule out the hardware properly

If the steps above change nothing, prove whether the speaker itself is at fault. Play music at full volume: if the loudspeaker is loud and clear, the speaker module is fine. Record a voice note and play it back: if you can hear it, the microphone is fine. Make a normal phone call on loudspeaker: if that works but WhatsApp does not, the fault is in WhatsApp’s routing or installation, and reinstalling WhatsApp, after backing up chats, is the next step. If normal calls are also silent on loudspeaker, work through the general speaker checks instead, starting with a speaker test and a grille clean.

One more trap: the proximity sensor. If the screen goes black and audio switches to the earpiece whenever you lift the phone, but works when the phone lies flat on a table, a screen protector or case edge over the sensor is the cause. Remove the case and test with the phone flat before you blame the speaker.

When to reinstall, and when to get a repair

Reinstall WhatsApp only after backing up chats to Google Drive or iCloud, and only after the permission, Bluetooth and cache steps have failed. A fresh install fixes corrupted audio settings that no menu exposes. If a fresh install, a software update and a restart still leave WhatsApp silent while every other app plays sound, contact WhatsApp support from inside the app with the phone model and software version noted. If no app plays sound on the loudspeaker, that is a hardware or system fault, and a repair shop should test the speaker module and the audio connector.

Frequently Asked Questions

Why can I hear music but not WhatsApp calls?
Music uses the loudspeaker directly, while WhatsApp calls route through the earpiece, Bluetooth or loudspeaker depending on settings and connected devices. Check Bluetooth, the in-call speaker button, and WhatsApp’s microphone permission first.

Why do WhatsApp voice notes play quietly?
Voice notes play through the earpiece when the proximity sensor thinks the phone is at your ear. Tap the speaker icon on the voice note, keep your hand away from the top of the screen, and play it with the phone flat on a table.

Can the other person not hearing me be a speaker problem?
No, that is a microphone problem, not a speaker problem. Check WhatsApp’s microphone permission, test a voice note recording, and make sure no Bluetooth headset is capturing the microphone instead.

Does clearing WhatsApp’s cache delete my chats?
No, clearing cache on Android removes temporary files only. Clearing data or uninstalling without a backup does risk chats, so back up first before reinstalling.

Why do WhatsApp calls go silent after a few seconds?
Battery optimisation pausing WhatsApp, a Bluetooth device reconnecting mid-call, or a network switch between Wi-Fi and mobile data are the usual causes. Exempt WhatsApp from battery optimisation and test on one stable connection.

Should I reinstall WhatsApp if the speaker works in other apps?
Yes, after backing up chats, if permissions, Bluetooth, cache and updates have all failed. A fresh install fixes corrupted audio routing that the settings menus cannot reach.

Try the free tool now: Fix My Phone Speaker plays a test tone to check your loudspeaker. If normal calls are also affected, see Phone Speakerphone Not Working? 8 Fixes, and if calls echo instead of going silent, read Phone Speaker Echo During Calls.