You slip the Galaxy Buds3 Pro into your ears expecting that familiar wall of silence, but the world keeps leaking in. The air conditioner hums, the bus engine drones, and the cancellation feels barely there or missing entirely. The reassuring news is that Active noise canceling on the SM-R630 is on by default, so a complete failure almost always points to a setting that flipped, a fit that has loosened, or a temporary glitch that a few minutes of checking will clear. Work through the fixes below in order, starting with the quickest taps and saving the re-pair and Samsung Support route for last. Most people find that one of the first few checks brings their silence back.
Confirm ANC is selected and both buds are in
Active noise canceling on the Buds3 Pro only works when you are wearing both earbuds, so if one bud is sitting in the case or in your pocket, cancellation will not engage at all. Start by making sure both buds are seated in your ears, then verify the mode is actually set to ANC rather than Ambient or Adaptive sound. It is easy to nudge the mode by accident with a touch control, so this quick check is worth doing first.
- 1.Open the Galaxy Wearable app on your paired Android phone.
- 2.Tap 'Active noise canceling' and confirm it is selected.
- 3.If cancellation feels weak, raise the 'Active noise canceling level' slider to increase it.
You can also switch modes directly from the buds. While wearing both earbuds, touch and hold one earbud to change the noise control mode, and listen for the beep that confirms the change. Because this model ships with ANC on by default, if it seems disabled, simply re-selecting it here is often the entire fix. If you are on a Galaxy phone running One UI 8.0 or later, your earbud settings live in the phone's Settings under the name of your buds rather than in the Galaxy Wearable app, but the same ANC controls are there.
Stop an automatic mode from switching you out of cancellation
One of the most common reasons ANC appears to stop working is that an automatic feature is quietly moving you into Ambient sound. Adaptive sound and the auto-switch options are designed to let outside noise in when you talk or when a hazard is detected, which can feel like the cancellation has broken when it is actually behaving as intended.
In the Galaxy Wearable app, open 'Auto switch to ambient sound' and review the relevant toggles. Look at Voice Detect ('Enable Ambient sound when you begin speaking') and Siren Detect ('Enable Ambient sound when a siren is detected'). If talking or outside noise keeps turning your cancellation off, switch these off so ANC stays engaged. There is also an option to use Ambient sound during calls, so check that too if cancellation drops only when you are on the phone. You can use the control bar at the top of the Galaxy Wearable app to manually switch between Ambient sound, Adaptive sound, and Active noise canceling whenever you want to lock in a single mode.
Get a proper ear-tip seal so cancellation can do its job
Even perfectly working ANC will feel useless if the buds do not seal your ear canal, because any gap lets ambient noise leak straight in. The Buds3 Pro come with different sized ear tips, so the first thing to check is whether you are using a size that leaves no gap between your ear and the tip. A tip that is too small is one of the most common causes of cancellation that feels thin or uneven.
Insert the R bud into your right ear and the L bud into your left ear, then angle each bud so the bottom microphone points toward your mouth. Rotate the bud gently until it sits snugly and feels secure. A gap-free fit is the foundation that lets cancellation work as intended, so it is worth taking a moment to get this right before moving on. If one ear always seals worse than the other, try a larger tip on that side, since ear canals are rarely identical.
Run the built-in Earbud fit test
Rather than guessing whether your seal is good enough, let the earbuds measure it for you. The fit test plays a tone and tells you whether the current tips are sealing properly or whether you should adjust the bud or swap to a different ear-tip size. It takes only a few seconds and removes the guesswork.
With both buds in your ears and connected, on One UI 8.0 or later open Settings, tap the name of your buds near the top, tap 'Sound quality and effects', select 'Earbud fit test', then tap 'Start'. On software older than One UI 8.0, reach these settings through the Galaxy Wearable app instead. If the result comes back as a poor fit, adjust the bud or change ear-tip size and retest until you get a good fit. Once the test reports a good seal, ANC has the best possible conditions to work with.
Clear earwax and debris from the tips and mesh
Over time, earwax and grime build up on the mesh, the microphones, and the ear tips, and that buildup can drag down performance. Since ANC relies on the microphones to sample and counter outside noise, a clogged mesh can blunt cancellation as well as muddy your music, so cleaning is a genuine fix and not just cosmetic.
Gently remove the ear tip and clean both it and the mesh covering on the speaker using a dry, soft brush or a cotton swab. Wipe the body of the earbud with a soft, dry cloth. Keep the cleaning dry and gentle: avoid liquids, and do not use abrasive or pointed tools that could tear the mesh or scratch the housing. A careful cleaning often restores both sound clarity and the effectiveness of cancellation, and it is good to repeat every few weeks if you wear the buds daily.
Install the latest earbud software
Bugs that affect ANC are routinely addressed in firmware updates, so keeping the buds current is one of the more reliable fixes for behavior that feels off. The update runs through the charging case while the buds are docked, so make sure both buds have a little charge before you begin.
- 1.Insert the earbuds into the charging case with the lid open.
- 2.Open the Galaxy Wearable app.
- 3.Tap 'Earbud settings'.
- 4.Tap 'Earbuds software update'.
- 5.Tap 'Download and install'.
If the buds will not update, update the Galaxy Wearable app itself first from your app store, then return to the steps above and try again. Keep the buds in the case with the lid open and your phone nearby until the update finishes.
Restart the earbuds to clear a temporary glitch
A quick restart resolves a surprising number of intermittent issues, including cancellation that simply stopped responding. The process is built into the case, so no buttons are required and nothing is erased.
Insert both earbuds into the charging case and close the lid. Wait at least seven seconds, then remove the earbuds. Put them back in your ears, let them reconnect, and test ANC again. If cancellation comes back to life, a momentary software hiccup was the culprit and you are done. This is a safe step to repeat any time the buds start behaving oddly.
Re-pair the buds, reset if needed, then reach Samsung Support
If cancellation still will not work after everything above, the next step is to rebuild the connection between your buds and your phone. Re-entering pairing mode forces a fresh handshake that can clear deeper connection problems without erasing your buds' settings.
- 1.Place both buds in the case and close the lid.
- 2.Reopen the lid, leaving the buds in the case.
- 3.Press and hold the 'Connect' button on the bottom of the case for three or more seconds; the case lights will flash green-blue-red to show pairing mode.
- 4.Re-add the earbuds on your phone.
For persistent problems, you can factory reset the buds through the Galaxy Wearable app under 'Earbud settings'. Note that a factory reset erases your buds' saved settings and pairing information and returns the earbuds to their original out-of-box state, so you will need to set them up and pair them again afterward. If cancellation is still broken even after a reset, the issue may be a hardware fault, and you should contact Samsung Support for service or repair options.
Frequently Asked Questions
Does the Galaxy Buds3 Pro have noise cancelling turned on by default?
Yes. The Buds3 Pro (model SM-R630) ship with Active noise canceling enabled by default, and the level is adjustable. If it seems off, open the Galaxy Wearable app, tap 'Active noise canceling', confirm it is selected, and raise the 'Active noise canceling level' slider if cancellation feels weak.
Why does ANC stop working when I start talking?
That is usually the auto-switch feature behaving as designed. Voice Detect ('Enable Ambient sound when you begin speaking') and Siren Detect ('Enable Ambient sound when a siren is detected') intentionally move you into Ambient sound. In the Galaxy Wearable app, open 'Auto switch to ambient sound' and toggle these off so ANC stays engaged.
Why does cancellation only work when both buds are in?
Active noise canceling on the Buds3 Pro only functions when you are wearing both earbuds. If one bud is in the case or in your pocket, ANC will not engage, so make sure both are seated in your ears before testing.
How do I check whether my ear tips are sealing properly?
Use the built-in Earbud fit test. With both buds in your ears and connected, on One UI 8.0 or later open Settings, tap the name of your buds, tap 'Sound quality and effects', select 'Earbud fit test', then tap 'Start'. On older software, reach this through the Galaxy Wearable app. If you get a poor fit, adjust the bud or change ear-tip size and retest.
How do I reset my Galaxy Buds3 Pro if nothing else works?
You can factory reset the earbuds through the Galaxy Wearable app under 'Earbud settings'. A factory reset erases your saved settings and pairing information and returns the buds to their original state, so you will need to set them up again. If cancellation is still broken after a reset, contact Samsung Support for service.
