How to fix sound problems on an Android phone

A phone that has gone quiet is usually fixable in a minute or two, and it is rarely the speaker itself. Most of the time the wrong volume is turned down, Do Not Disturb is on, the grille is clogged, or the audio is quietly routing to a Bluetooth device across the room. Work through the checks below from simplest to most involved, and you will know whether it is a setting, an app, or hardware.

Symptom	Most likely fix
No sound at all	Turn off Do Not Disturb, then restart the phone
Music plays but no ringtone	Raise the ring volume, not just media
Muffled or crackly output	Clean the grille and take the case off
Sound in just one app	Turn up in-app volume, unmute, reopen it
Phone silent, earbuds fine	Disconnect Bluetooth so audio returns to the phone
Nothing on calls	Raise call volume mid-call and clear the earpiece

Turn up the right volume, and check Do Not Disturb#

Android keeps several volumes separate — media, call, ring, notification, and alarm — and the volume buttons change only one at a time depending on what you are doing. Press a volume button, then tap the small menu or settings icon beside the slider to see all of them, and raise the one that matches your problem: media for music and video, ring for calls and texts. You can also set each level under Settings, in Sound & vibration on newer phones or Sound on older ones, following Google’s guide to volume and sound settings.

If everything is silent, check whether Do Not Disturb is on. It mutes ringtones and notifications by design, and it is easy to leave running after a meeting or overnight. Swipe down from the top of the screen and look for a Do Not Disturb or Modes tile, then turn it off. Google describes the behavior in its Modes and Do Not Disturb help.

A muffled or crackly speaker#

If sound plays but comes out weak, buzzy, or distorted, the hardware is probably just blocked. Speaker and earpiece grilles collect lint and dust, and a snug case or a thick screen protector can sit over an opening.

• Brush the speaker grille gently with a soft, dry brush, and do not push debris deeper in.
• Take the case off and test again; a case that overhangs the speaker or earpiece is a common culprit.
• If the phone got wet, let it dry fully before you judge the sound, since water in the grille muffles and crackles until it clears.

No sound in one app, or it all goes to Bluetooth#

When only one app is silent, the phone is fine. Many apps have their own volume or a mute control — a video muted by default, a game with sound switched off in its settings — so check inside the app first, make sure media volume is up, then close and reopen it. If that fails, force stop the app from Settings and open it again.

If several apps are silent while your earbuds or car stereo work, the audio is routing over Bluetooth. Your phone stays connected to a paired device until you unpair it, so a headset in your bag or a speaker in the next room can quietly capture the sound. Turn Bluetooth off from Quick Settings, or disconnect the device, and the audio comes back to the phone. When pairing keeps dropping or will not route correctly, Google has a page on fixing Bluetooth problems.

No sound on calls#

If you cannot hear the other person, start with the call volume: press a volume button while the call is connected, since that is the only time the buttons adjust call audio. Then look at the earpiece, the thin slot at the top of the screen. A case, a screen protector, or trapped grime over that slot muffles the caller’s voice. Tap the speaker button to send the call to the loudspeaker as a test; if speaker works but the earpiece does not, the earpiece slot is likely blocked or failing. The screen going dark when you hold the phone to your ear is the proximity sensor doing its job, not a fault.

Rule out a bad app, then restart#

A plain restart clears a surprising number of audio glitches, so do that before anything drastic. If sound is still wrong, reboot into safe mode, which loads Android with third-party apps disabled; the exact button combination varies by phone, and Google’s safe mode instructions point you to your manufacturer’s steps. If sound works in safe mode, an installed app is the cause — restart normally, then uninstall recently added apps one at a time until the problem is gone.

Still nothing after all of that, and it is likely hardware. Back up your data and try a safe factory reset as a last software step; if the speaker stays dead, book a repair. While you are tidying up settings, it is a good moment to speed up a slow Android phone and save battery on Android so the fixes stick.